Season 4

77 :04x01 - The Avengers

As the gang all continue to deal with Marissa's death, they all begin to adjust to life after high school. At Brown, Summer has re-invented herself into an environmental activist with help of her new friend, Che. Ryan has moved out of the Cohen household and continues to cope Marissa's death, which he took the hardest of all. But when Ryan misses a dinner at the Cohens, Seth finds Ryan slipping back to his old ways and calls Summer for help. Meanwhile, Julie finds it hard to deal with her daughter's death; Kaitlin uses the Cooper charm to get a new pair of boots; and Taylor tries to avoid everyone in order to hide the fact that she's not in Paris.
Special Guest Stars: Chris Pratt as Che |
Guest Stars: Michael Nouri as Dr. Neil Roberts | Paula Trickey as Veronica Townsend | Kim Oja as Taryn | Channon Roe as Jake |
Co-Guest Stars: D.J. Rabiola as Shady Guy #1 | Fivel Stewart as 11-year-old Girl | Wayne Dalglish as Brad Ward | Corey Price as Eric Ward | Benjamin Diskin as Philip (as Ben Diskin) | Todd Bosley as Leon | Tom Biagini as Yacht Club Bartender | Parvesh Cheena as Passerby
Director: Ian Toynton
Songs: Keane -- A Bad Dream, Sam Roberts -- Bootleg Saint, Catherine Feeny -- Mr. Blue, Placebo -- Running Up That Hill, Jude -- Save Me, Belle & Sebastian -- Song For Sunshine

78 :04x02 - The Gringos

Ryan and Seth leave the O.C. to go south of the border, each to find something they're looking for -- Ryan searches for Volchok in order to deal with his emotions and Seth has an encounter with the U.S. Marines. Meanwhile, Julie and Kaitlin are forced by the Dean to work together on the Harbor school clothing drive and Julie is shut out by the Cohens when they discover what she's up to. Elsewhere, Taylor springs a surprise visit on Summer who continues to distance herself from California.
Special Guest Stars: Chris Pratt as Che |
Guest Stars: Cam Gigandet as Volchok | Michelle Ongkingco as Amber | Steve-O as First Marine | Johnny Michaels as Huge Bartender | Tia Carrere as Dean Torres |
Co-Guest Stars: Wayne Dalglish as Brad Ward | Sandra Ramírez as Waitress | Corey Price as Eric Ward
Director: Patrick Norris
Songs: Lockdown Project -- Can You Feel It?, The Long Winters -- Fire Island, AK, Banda Jerez -- La Chirriona, Manu Chao -- Lagrimas de Oro, Descemer -- Pa'Arriba, Plastillina Mosh -- Quiero Mi Pastilla, Band Of Horses -- The End's Not Near

79 :04x03 - The Cold Turkey

It's Thanksgiving in the O.C. as the Cohen family continues to deal with the happenings in Mexico. Sandy is able to cut a deal to help Volchok, but ends up letting Ryan intervene, allowing him to settle the score. At Brown, as Summer packs up to come back to Seth and the new Roberts family, she wonders if she'll be able to deal with Newport. Meanwhile, Julie has trouble dealing with both Kaitlin Dr. Roberts, leading her to spend most of her Thanksgiving alone.
Guest Stars: Michael Nouri as Dr. Neil Roberts | Cam Gigandet as Volchok | Paula Trickey as Veronica Townsend | Lamont Thompson as Greg Hodes |
Co-Guest Stars: David Stifel as Bill | Scott Krinsky as Darryl
Director: Michael Lange
Writer: J.J. Philbin
Songs: Alexi Murdoch -- All Of My Days, Thom Yorke -- Black Swan, Get Cape. Wear Cape. Fly -- One More With Feeling

80 :04x04 - The Metamorphosis

Summer tries to return to the popular, gossipy girl that she was in high school, but finds that her time at Brown may have changed who she is forever. Despite her changes, Seth continues to support the new Summer. Meanwhile, Ryan helps Taylor out of a predicament and Julie and Kaitlin try to stay out of trouble, but find it hard to do.
Special Guest Stars: Chris Pratt as Che |
Guest Stars: José Zúñiga as Jason Spitz | William Abadie as Jean Claude Langois | Kim Oja as Taryn |
Co-Guest Stars: Wayne Dalglish as Brad Ward | Corey Price as Eric Ward | Zack Schenkkan as Kid | Gil Glasgow as Security Guard | Jordan Mantell as Sketchy Dude | Jack Guzman as Bouncer | Artem Chigvinsev as Hot Guy in Bar | Geoffrey Drew as Airline Representative (as Jeffrey Drew)
Director: Norman Buckley
Songs: Senza -- Cava Del Rio, Ranchera All Stars -- De Un Mundo Raro, Chingy -- Dem Jeans, Ranchera All Stars -- Ella, Super Furry Animals -- Hello Sunshine, Lady Sovereign -- Love Me Or Hate Me, The Pogues -- Love You 'Till The End, Editors -- Orange Crush, R.E.M. -- Orange Crush, Zero 7 -- Pageant Of The Bizarre, Ranchera All Stars -- Para Todo El Ano, Ranchera All Stars -- Siempre Hace Frio, Ranchera All Stars -- Tu Solo, Chelo -- Voodoo

81 :04x05 - The Sleeping Beauty

Taylor, after learning about Ryan's insomnia, comes up with her own therapeutic remedy to help him sleep. At Brown, Summer and Che step up their activism and their actions lead to more freedom than they had imagined. Meanwhile, Kaitlin helps Julie save the dating service and Taylor is forced to turn to Kaitlin for help with Ryan when her plan backfires.
Special Guest Stars: Chris Pratt as Che |
Guest Stars: Gary Grubbs as Gordon Bullit | Kat Sawyer-Young as Head Dean | Matt Crabtree as The Scientist | Michelle Ongkingco as Amber | Brandon Quinn as Spencer |
Co-Guest Stars: Corey Price as Eric Ward | Wayne Dalglish as Brad Ward
Director: Ian Toynton
Songs: Tom Quick -- Butterfly, Goldspot -- Float On, Chad VanGaalen -- Gubbbish, Ben Gidsjoy -- Need Music, Digby Jones -- Under The Sea, Zero 7 -- Waiting To Die, Elvis Perkins -- While You Were Sleeping, Brother And Sisters -- Without You

82 :04x06 - The Summer Bummer

Seth travels to Providence to visit Summer, but when he gets to Brown all he finds is an empty dorm room. While Seth is away, Kirsten and Sandy are able to find an opportunity to bond with Ryan, who's in a haze after Taylor's doings. Meanwhile, Kaitlin takes the school mean girl down the best way she knows how -- a rager at the Roberts' house. Elsewhere, Julie finds that Newmatch is more than a dating service and the truth about Che is finally exposed.
Special Guest Stars: Chris Pratt as Che |
Guest Stars: Gary Grubbs as Gordon Bullit | Brandon Quinn as Spencer | Kat Sawyer-Young as Head Dean | Ashley Benson as Riley |
Co-Guest Stars: Wayne Dalglish as Brad Ward | Corey Price as Eric Ward | Chris Dotson as Roger | Janel Parrish as Leah | Daniel Booko as Connor | Callie Thorne as Olivia | Daniel Graves as Justice of the Peace | Kelly Hare as Pam
Director: Michael Lange
Songs: Youth Group -- Daisychains, Dirty Pretty Things -- Deadwood, Clearlake -- Good Clean Fun, Butch Walker -- Hot Girls in Good Moods, Eberg -- Inside Your Head, Jet -- Put Your Money Where Your Mouth Is, The Blood Arm -- Stay Put, Digby Jones -- Under the Sea

83 :04x07 - The Chrismukk-huh?

It's once again Chrismukkah in the O.C. and it's up to Taylor and Ryan to make Chrismukkah as it should be. After Ryan and Taylor fall of the roof of the Cohen's house, Ryan falls unconscious. While in the hospital, Ryan dreams of how life would be if he never came to Newport. With Taylor's help, Ryan is able to get life back to the way that it was before the accident.
Special Guest Stars: Chris Pratt as Che |
Guest Stars: Paula Trickey as Veronica Townsend | Tate Donovan as Jimmy Cooper |
Co-Guest Stars: Corey Price as Eric Ward | Wayne Dalglish as Brad Ward | Craig Susser as Ham Guy/Santa/Journalist/Caterer | Mark Daniel Cade as Security Guard | Scott Krinsky as Darryl | Jeff Witzke as News Correspondent | Ashley Hartman as Holly Fischer | Kim Evey as Doctor | Patty Onagan as Mima | Lily Rains as Nurse | Dan Jongebloed as Alt. Taylor | Stephen O'Mahoney as Police Officer
Director: Ian Toynton
Songs: Mates of State -- California, Ashtar Command -- Into Dust, Sia -- Paranoid Android

84 :04x08 - The Earth Girls Are Easy

It's New Year's Eve in the O.C. and to celebrate the holiday, Ryan puts together a road trip as a surprise for Taylor, but his surprise is spoiled when Summer finds out that Seth hasn't planned anything for her. Later, the four head to Las Vegas where they meet a raver who may be able to help Summer's future. Back in Newport, the Bullit has a friend look into Julie's accounting.
Guest Stars: Gary Grubbs as Gordon Bullit | Kevin Sorbo as Frank Atwood | Brandon Quinn as Spencer |
Co-Guest Stars: Diana Gitelman as Alien Girl | Samuel Mangiello as Massive Alien | Jonathan Kowalsky as Fan Boy | Ammar Mahmood as Saudi Prince #1 | Lee Zagari as Saudi Prince #2
Director: Norman Buckley
Writer: Mark Fish
Songs: Si Zentner -- Desafinado, Dogzilla -- Dogzilla, Tally Hall -- Smile Like You Mean It, Henry Mancini -- Something for Cat, John Digweed -- Warung Beach

85 :04x09 - The My Two Dads

When Kaitlin fails a class presentation, she's paired up with Will, the Harbor band geek. Kaitlin thinks that she can get Will to do her work for her, but when he begins to challenge her, sparks between the two emerge. After their new commitment from New Year's Eve, Seth and Summer begin making plans but fail to recognize their true feelings. Meanwhile, Sandy confronts Frank and Julie reveals Frank's true identity to Kirsten.
Guest Stars: Chris Brown (2) as Will Tutt | Kevin Sorbo as Frank Atwood | Bridgett Newton as Ms. Tidey |
Co-Guest Stars: Wayne Dalglish as Brad Ward | Corey Price as Eric Ward
Director: Michael Schultz
Songs: The Explorers Club -- Forever, Tuning -- It’s Because… We’ve Got Hair, M. Craft -- Somewhere In Between, The Long Winter -- The Commander Thinks Aloud

86 :04x10 - The French Connection

Henri-Michel, Taylor's ex-husband, arrives in the O.C. to promote his erotic memoir of his times with Taylor. When Henri-Michel and Ryan meet and Ryan learns of Taylor's time in France with Henri-Michel, Ryan begins to second guess his relationship with Taylor. Seth visits Dr. Roberts in order to ask for Summer's hand in marriage while Summer visits Holly who has a vision of Summer's future. Meanwhile, Kaitlin realizes that she has feelings for Will.
Special Guest Stars: Chris Pratt as Che | Chris Brown (2) as Will Tutt |
Guest Stars: Michael Nouri as Dr. Neil Roberts | Henri Lubatti as Henri-Michel | Brandon Quinn as Spencer | Gerard Ismael as Unknown |
Co-Guest Stars: Wayne Dalglish as Brad Ward | Corey Price as Eric Ward | Jesse Burch as Bookstore Guy | Ashley Hartman as Holly Fischer | Craig Susser as Guy | Jessica Friedman as Lisa | Scott Rodgers as Waiter | Ellen Woglom as Brynn | Xavier J. Nathan as French Producer | Scott Krinsky as Darryl | Brian Guest as Ken | David Stifel as Bill
Director: John Stephens
Writer: J.J. Philbin
Songs: The Sunshine Underground -- I Ain't Losin' Any Sleep, Get Cape. Wear Cape. Fly. -- I Spy, Jason Schwartzman -- The West Coast, The Shins -- Turn On Me

87 :04x11 - The Dream Lover

Seth and Che take a trip together to the forest. There, Che has a dream that tells him that his spirit is in love with an unexpected someone. After the trip, Seth and Summer are finally able to speak to one another. Meanwhile, Julie finds a way back into Kirsten's life, Julie-style, Kaitlin shuts out Will, and Taylor decides that she has to stop speaking to Ryan.
Special Guest Stars: Chris Pratt as Che | Chris Brown (2) as Will Tutt |
Guest Stars: Lorna Scott as Bernice | Julia Ling as Lucy | Brandon Quinn as Spencer | Henri Lubatti as Henri-Michel |
Co-Guest Stars: Wyndoline Landry as Rachel | Stacy Barnhisel as Newpsie | Kirstin Pierce as Fiona | Eden Sher as Jane
Director: Patrick Norris
Songs: Sufjan Stevens -- Dear Mr. Supercomputer, The Low Standards -- Du Temps, April March -- Garcon Glacon, Tally Hall -- Hidden in the Sand, Sparklehorse -- Return to Me, Charlotte Gainsbourg -- Tel Que Tu Es, The Western States Motel -- The New E Blues

88 :04x12 - The Groundhog Day

As Kirsten's 40th birthday is nearing, Ryan and the Cohen men prepare a party for her while Kirsten receives news that will forever change her life. Meanwhile, Julie has a secret love affair that Kaitlin tries to stop; and Taylor visits a therapist who gives her advice while Ryan pretends not to miss her. Elsewhere, when the plan to save Newport Chuck falls through, Che finally learns that Seth is not his soulmate.
Special Guest Stars: Chris Pratt as Che |
Guest Stars: Sandra McCoy as Hippie Chick (as Sandy McCoy) | Alison La Placa as Dr. James | Gary Grubbs as Gordon Bullit | Kevin Sorbo as Frank Atwood |
Co-Guest Stars: Corey Price as Eric Ward | Wayne Dalglish as Brad Ward | Elayn Taylor as Dr. Harris | Scott Krinsky as Darryl | Amy Shelton-White as Event Organizer | Chris Damiano as Security Guard #1 | Price Carson as Security Guard #2 | Scott Stenholm as Delivery Boy | Mel Fair as Reporter | Phil Kaufmann as Chauffeur | Tom Billett as Policeman
Director: Ian Toynton
Writer: Mark Fish
Songs: Hot Chip -- And I Was A Boy From School, Of Montreal -- Gronlandic Edit, Pajo -- High Lonesome Moan, Silversun Pickups -- Lazy Eye, Chemical Brothers -- Leave Home, The Stills -- The House We Live In

89 :04x13 - The Case of the Franks

Taylor concocts a plan to make things right between Ryan and his father. Julie continues to further her relationship with Bullit but when Julie and Frank run into each other in front of Ryan and Taylor it becomes apparent that Julie is having a secret affair with Frank. When Kaitlin finds out that Ryan and Taylor are working to get Julie and Frank together, she goes out of her way to make her mother like Bullit, forcing Julie to choose between Frank and Bullit. Meanwhile, Summer begins to question if Seth is the one for her after she and Seth get a psychic reading.
Guest Stars: Ellen Hollman as Young Kirsten | Max Greenfield as Young Sandy | Viji Nathan as Psychic | Gary Grubbs as Gordon Bullit | Kevin Sorbo as Frank Atwood | Graham Miller as Young Jimmy | Cathy Lind Hayes as Teacher |
Co-Guest Stars: Bella Thorne as Young Taylor | Wayne Dalglish as Brad Ward | Corey Price as Eric Ward | Tristan Price as Young Seth | Chelsea Smith as Young Summer | Connor Webb as Young Luke | Samantha Figura as Young Taryn | Kerby Moore as Young Holly | Mel Fair as Newscaster | Michael Schur as Paul | Patty Onagan as Mima | Joseph Anthony (1) as Luis
Director: Norman Buckley
Writer: J.J. Philbin
Songs: Youth Group -- Start Today Tomorrow, R.E.M. -- Talk About The Passion, Frank Chacksfield & His Orchestra -- Theme From Picnic (Moonglow), The Midway State -- Unaware

90 :04x14 - The Shake Up

Taylor and Ryan finally say those three words to each other, but did they both mean it? Summer challenges Seth to find something he's passionate about. Kirsten, for the first time in her life, has a realization about what Newport is really all about. Meanwhile, Kaitlin continues to attempt to break up her mother's relationship with Frank, but Julie begins to notice Kaitlin's efforts and ends up making a change. As the night comes to a close, Newport is shaken up by an earthquake.
Guest Stars: Kevin Sorbo as Frank Atwood | José Zúñiga as Jason Spitz | Bre Blair as Carrie Spitz |
Co-Guest Stars: Brian Kubach as Barista | Ashley Hartman as Holly Fischer | Ryan Dowler as Pregnant Girl #1 | Jessica Williams as Pregnant Girl #2 | Mark Fish as Mailman
Director: Ian Toynton
Songs: I Am Jen -- Broken In All The Right Places, Rogue Wave -- Debaser, Bloc Party -- I Still Remember, Fredo Viola -- The Sad Song, Damien Jurado -- What Were The Chances

91 :04x15 - The Night Moves

After the earthquake, Newport residents scramble to make sure everyone is alright. Sandy tells Seth to say put, but Seth does whatever he can to be with Ryan and Taylor. When Seth and Ryan finally meet back up, Seth begins to realize what it means to be a brother. While Summer and Taylor can't find Pancakes and begin frantically searching for him, Taylor sees that bonds people have with their family are greater than she could have ever imagined. Meanwhile, Julie and Kaitlin are stuck in an ice cream shop until the only man for Julie arrives to save them. But everything isn't as it seems when everyone meets up at the Cohen house.
Guest Stars: Kevin Sorbo as Frank Atwood | Paula Trickey as Veronica Townsend | Lorna Scott as Bookstore Manager | Aaron Fors as Gary |
Co-Guest Stars: Scott Krinsky as Darryl | Richard Molina (1) as ER Doctor | Craig Susser as Ham Guy | Elayn Taylor as Exam Doctor
Director: Patrick Norris
Songs: The M's -- Come Into Our Room, Goldspot -- Float On, Imogen Heap -- Hallelujah, Rock Kills Kid -- I Turn My Camera On, Bloc Party -- Kreuzberg, Silversun Pickups -- Rusted Wheel, The Perishers -- Sway, Sufjan Stevens -- The Incarnation, Fredo Viola -- The Sad Song

92 :04x16 - The End's Not Near, It's Here

Newport was forever changed with the arrival of outside Ryan Atwood four years ago. In the series finale, an emotional ending shows what happens to each of the lives that Ryan touched, including the Cohens, Coopers, and his most recent love, Taylor.
Guest Stars: Paula Trickey as Veronica Townsend | Kevin Sorbo as Frank Atwood | Gary Grubbs as Gordon Bullit | Brandon Quinn as Spencer | Todd Sherry as Todd | Jim Pirri as Patrick |
Co-Guest Stars: Daniel Graves as Justice of the Peace | David Paluck as Inspector | Kirstin Pierce as Fiona | Christopher Gehrman as Customs Agent | Don R. Williams as Conductor | Curtis Mark Williams as Tom | Easton Gage as Young Kid
Director: Ian Toynton
Songs: Patrick Park -- Life Is A Song, Jacob Golden -- On A Saturday, Jet -- Shine On, Clinic -- The New Seeker
Classification: Scripted
Genre: Comedy | Drama | Romance/Dating
Status: Ended
Network: FOX ( USA)
Airs: Thursdays
Runtime: 60 Minutes
Premiere: August 05, 2003
Ended: February 22, 2007
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