When Pete discovers Violet clinging to live following a violent attack from a patient, he rushes her to the hospital where Addison and Naomi work together to save her life. Meanwhile, the location of Violet's baby are still unknown.
Elliott Smith -- Angeles, They Might Be Giants
-- Birdhouse In Your Soul, Miranda Lee Richards -- Breathless, Zee Avi -- Monte, Rosie Thomas -- Say Hello
While Violet recovers from her brutal attack, the emotions from the trauma continue to get the best of her despite the support from Pete and her friends. Meanwhile, Addison and Naomi try to work on their relationship, and Sam and Cooper treat a man who was stabbed by his wife.
Songs: Gemma Hayes -- Chasing Dragons, Laura Izibor -- Mmm..., Home Video -- You Will Know What To Do
Addison is not the only doctor at Oceanside Wellness who is pleased to see Miranda Bailey when she brings a patient to Los Angeles. The consequences of Addison and Noah's affair catches up with her. Sheldon and Pete find out who the father of Violet's baby is.
Songs: Katie Costello -- I Can't Fix Us Two, Rachael Cantu -- Make a Name for Me and You, Aron Wright -- Song for the Waiting
Songs: Denison Witmer -- From Here On Out, Great Lake Swimmers -- Imaginary Bars, The Sounds -- The Only Ones
Two of Naomi's former patients face complications that threaten their unborn children. Meanwhile, Violet is asked to testify against her attacker, but doesn't immediately agree to do so; and Charlotte attempts to join the Oceanside Wellness Group.
Songs: Greg Holden -- Choking On The Concrete, Farryl Purkiss -- Sticks & Stones, Mayer Hawthorne -- Your Easy Lovin' Ain't Pleasin' Nothin'
Naomi weighs the pros and cons of genetically designing babies. Meanwhile, Violet tries electroshock therapy to try to help one of her patients.
Songs: Mirah -- Gone Are The Days, Alex and Sam -- The One, Pixie Lott -- The Way The World Works
While in Malibu hiking, Addison and Sam rush to the aid of a couple trapped in a car that they happen to stumble upon. Meanwhile, Charlotte, Cooper and Violet help a newlywed who took too much Viagra before his wedding night; and Pete and Sheldon go out together, but end up falling for the same girl.
Songs: Basko -- Drop It, The Leaning Eaves -- I Lie, Hazy Malaze -- Looking Out for You, Hazy Malaze -- Thank You in Advance, Juliette Commagere -- The Big Middle
Addison's father drops by for a surprise visit, much to her dismay. Meanwhile, Cooper is arrested for refusing to work on a case; and Pete tries to keep a terminally ill patient alive so that he can meet his new daughter before he passes.
Golden State -- All Roads Lead Home, Aidan Hawken -- If Something's Wrong, Ray LaMontagne
-- Let It Be Me
After performing a complex surgery, Addison is finally able to find something in common with her father. Meanwhile, Naomi and Sam must deal with a family crisis.
Songs: Kate Earl -- Can't Treat Me That Way, Port O'Brien -- Love Me Through, Cham Pain -- Off The Wall
After an explosion at Dell's house, Betsey and Heather are sent to the hospital and everyone works to save their lives. Meanwhile, tension between Addison and her father increases when her mother, Bitzzy, shows up and reveals a family secret.
Andrew Bird -- Cataracts, Amy Stroup -- Hold Onto Hope Love, Eels
-- Marie Floating Over the Backyard, Sometymes Why -- The Sound Asleep
Mark follows Addison to Oceanside hoping she will help him with his pregnant daughter. Meanwhile, Dell and Naomi have problems raising their children in the same house; and Violet and Cooper disagree on the course of treatment for a patient, resulting in a large argument.
Maya makes an announcement that shocks Sam and Naomi, and Naomi's response leaves Sam to pick up the pieces. Meanwhile, Pete's patient begins using a bionic arm.
Addison and Cooper lend advice to a couple who must make a difficult choice as to which daughter to save with their newborn's core blood. Meanwhile, Sam learns that Dink is going to marry Maya, and the gang plans an intervention for Naomi.
Sam has Violet help plan Maya's wedding, as Naomi becomes more distant and refuses to help. Meanwhile, tensions arise between Addison and Sam as they treat a suicidal patient, and Cooper and Pete work together to treat a girl with a mysterious bite mark.
Naomi, Addison and Pete try to save a premature baby. Cooper thinks Charlotte's new boyfriend is abusing pills.
Things get too close for comfort when Addison, Pete and Sam must come together on a complicated case involving a dad-to-be who comes down with tuberculosis and threatens the future of his new family. Meanwhile, with Violet still gone on her Costa Rican escape, Sheldon takes over helping one of her patients, Natasha, to get over her crippling fear of flying, and Naomi finds herself in a bit of a love triangle of her own.
When Addison's patient and the life of the three unborn babies she is carrying as a surrogate hang in the balance, Sam's new girlfriend, Vanessa, and Addison are sharply divided on the course of treatment. Meanwhile Cooper seeks Sheldon's help with a young patient, but their personal quarrels over Charlotte get in the way, and Naomi has a dilemma of her own between William and an unexpectedly charming Dr. Fife.
The hospital must keep a surrogate mother on life support until her fetuses are able to survive; Naomi discovers that Addison and Sam have feelings for each other.
When a famed neurosurgeon and her team visit St. Ambrose, Addison is surprised to see Derek's younger sister on the team; Charlotte and Cooper try to figure out how to work together.
Mark follows Addison to Oceanside Wellness in hope of helping his daughter; Naomi and Dell try to raise their children under the same roof; Cooper and Violet don't agree on how to treat a patient.
After Violet files for joint custody of Lucas, an embittered Pete voraciously fights back by hiring a tough attorney for the trial, forcing their fellow friends and co-workers to choose sides and have their personal lives dragged onto the stand and into the public eye
Addison, Amelia and Fife try to save Maya and her unborn child; Sam makes a grim discovery; Cooper makes a valiant effort with Charlotte; an unexpected death leaves everyone stunned.