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Season 1

Operation: Cobra

Apr/02/1971
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1 :01x01 - Operation: Big Store

Sep/17/1971
In the series premiere episode, O'Hara tries to nail a rackets boss on charges of income tax evasion.
Guest Stars: Stanley Adams as Ell Brown | Eric Braeden as Vincent | William Campbell as Arnie Christenson | Paul Condylis as Phil Monroe | Edward Faulkner as Ike Carter | Dal Jenkins as Paul Kress | Del Monroe as Al Peters | Felton Perry as Billy Trent | George Takei as Joe Lew | Angel Tompkins as Diana
Director: Gerald Mayer

2 :01x02 - Operation: Bandera

Sep/24/1971
This time, O'Hara is out to bust up a gun smuggling operation.
Guest Stars: Richard Anderson as Agent Hobson | Lawrence Dobkin as Floyd Kramer | John Dennis as Karl Morley | Ross Hagen as Boots Randolph | Pilar Seurat as Juanita Rivera | Miguel Ángel Landa as Miguel Devo | Richard Angarola as Luis Vegas | Don 'Red' Barry as Harry | Tol Avery as J. D. Morgan | Raymond Mayo as Neely | Billy Halop as Bart | Albert Popwell as Hughes
Director: Allen Reisner

3 :01x03 - Operation: Stolen Bonds

Oct/01/1971
O'Hara Investigates the counterfeiting and theft of U.S. Savings Bonds by a criminal syndicate.
Guest Stars: Karen Machon as Louise Hall | Tony Young as Johnny Winters | Berkeley Harris as Todd Cramer | Dorothy Green as Jacqueline Wells | Alan Baxter as Walter Mason | Clark Howat as Doug Miller | Yale Summers as Fresno Agent
Director: Sam C. Freedle

4 :01x04 - Operation: Bribery

Oct/08/1971
O'Hara wonders if a crooked IRS agent is in league with the blackmail scheme of a small-time grifter.
Guest Stars: Frank Gorshin as Little Willie | Victor Buono as Al Connors | John Randolph as Thomas Gault | Patti Heider as Amy Wells | Russell Johnson as Agent Wells | Leonid Kinskey as Mortician | Robert Patten as Inspector Smith | Paul Picerni as Inspector Miller | Marc Hannibal as Inspector Barner | Bill Stevens as Supervisor McGill | Erin Moran as Girl
Director: Allen Reisner

5 :01x05 - Operation: Time Fuse

Oct/15/1971
O'Hara races against time to find and defuse a bomb.
Guest Stars: James Wainwright as Dave Shaw | Sian Barbara Allen as Sheridan Lee | Warner Anderson as Harley Buchanan | Kevin Coughlin as Jackson Croft | Vince Howard as Ed Monroe | Kenneth Washington as Marv Dixon | Paul Petersen as Fred Cope | Sam Edwards as Oscar Sims | Virginia Gregg as Mrs. Adams
Director: Lawrence Dobkin

6 :01x06 - Operation: Offset

Oct/22/1971
O'Hara goes up against an aging Burleque queen who is now running a counterfeit money operation.
Guest Stars: Ian Abercrombie as Mike | Bruce Bennett as S.A.C. Myers | Alex Dreier as Hippo LaMere | John Harmon (1) as Symon Foss | Richard Jaeckel as Barth | Marilyn Maxwell as Paradise Ryan | Buck Young as S.A. Wiley
Director: Dick Moder

7 :01x07 - Operation: Heroin

Oct/29/1971
O'Hara goes undercover as a carnival worker in order to trail a shipment of heroin through Mexico.
Guest Stars: Jack Carter as "Lucky" Strike | Sallie Shockley as Minny Mionso | Nico Minardos as Hugo Chavez | Rodolfo Acosta as Cesar Dominguez | Joaquin Martinez as Enrique Chavez | Robert Mandan as Thomas Jorgens | Ed Deemer as Inspector | R.L. Armstrong as Talker
Director: James Neilson

8 :01x08 - Operation: Spread

Nov/05/1971
The estranged wife of a gambler tips O'Hara that hubby might be a tax evader in league with organized crime.
Guest Stars: Robert Colbert as Alan Bryce | David Brian as Mark Hamilton | Peter Brown (1) as Agent Herron | Larry Pennell as Agent Wade | Jo Anne Meredith as Janet Bryce | Harry Lewis as Jack | Ella Raino as Mary Smith | Morgan Jones (1) as Agent Jones | Whit Bissell as Magistrate | Kenneth Tobey as Colonel Phillips | John Sebastian as Man | Mel Scott as Agent Donaldson | Judson Pratt as Forman

9 :01x09 - Operation: Deadhead

Nov/12/1971
O'Hara goes undercover as a truck driver in order to recover stolen explosives.
Guest Stars: Victor French as Paris Kohler | Douglas Fowley as Joe Workman | Paul Carr as Howard Barkley | Thomas A. Geas as Restaurant Owner | Paul Mantee as Frank Case | James Daris as Vincent Perl | Marion Ross as Sandy | Rodolfo Hoyos, Jr. as Chico Valdez | Carmen Zapata as Maria Valdez | Don Ross as Patrolman | Janaire as Laurie
Director: Paul Krasny
Writer: Jack Turley

10 :01x10 - Operation: Hijack

Nov/26/1971
This time O'Hara pulls undercover duty as an air cargo handler in order to solve mysterious thefts of valuable imported objects.
Guest Stars: Milton Selzer as Klaus Haisch | Judy Pace as Katrina Wiles | Joe E. Tata as Dick Miles | Leo Gordon as Harry Wilson | Richard Tate as Pete McAdams | Alan Baxter as Paul Fedderson | William Elliott as Les Williams | Edward Faulkner as Sgt. Wall | Robert Clarke (2) as Eliot Wyndham | Robert Palmer (2) as Hodges | Ed Peck as Officer
Director: Sam C. Freedle

11 :01x11 - Operation: Crystal Springs

Dec/03/1971
O'Hara goes to a small town in search of income tax violations.
Guest Stars: David Friedkin as Burton Craig | Lorraine Gary as Mrs. Madrid | Ron Foster as Al Ellis | Don 'Red' Barry as Sheriff Snuffy Bruce | George Ives as Clifford Spry | James Westerfield as Deputy Sheriff Phillips | Virginia Gregg as Elinor Hoxie | Frank Ferguson as Fred Hoxie | Russ Conway as Hansen | Bing Russell as Bob Rasmussen

12 :01x12 - Operation: Payoff

Dec/10/1971
O'Hara tries to set up a crime boss by convincing him that he's on the take.
Guest Stars: Joanna Barnes as Hannah | Harry Townes as E. J. Wallace | Dennis Patrick as Jason McGuire | Mitchell Ryan as Burke Devlin | John Lupton as Edward Bell | Claudio Martinez as Elfrego | Bill Stevens as Glen McKay | Alan Dexter as Richard King | Francis DeSales as William Teal | Marc Hannibal as Al Crisp | Pepe Hern as Santiago Bustamante | Robert Patten as Ed Miller
Director: Daniel Haller

13 :01x13 - Operation: Moonshine

Dec/17/1971
O'Hara seeks the source of moonshine that has been contaminated by lead
Guest Stars: Will Geer as Shelcy Mullins | Russell Wiggins as Gerald Dean | Jim B. Smith as Vin Heffernan | Alan Hale, Jr. as Claude Sparks | Paul Comi as Gus Petroni | Judith M. Brown as Ruth Ann Watkins | Katie O'Pace as Martha Tidwell | Dabbs Greer as Billy Jack | Sherry Boucher as Ginne Mae Watkins | Ross Elliott as Dr. John Snyder | Kay Stewart as Clara Hansen
Director: Paul Landres

14 :01x14 - Operation: XW-1

Jan/07/1972
O'Hara poses as an arms dealer to find the source of new machine guns that are ending up in the hands of criminals.
Guest Stars: Ed Nelson as Karl McAfee | Gary Crosby as Rodney Tiller | Lindsay Wagner as Edie Lang | Charles McGraw as Tom Kleyberg | Carl Esmond as August Werner | Jason Wingreen as Ed Michaels | Ken Lynch as Colonel Wescott | Buddy Lester as Peter Fareson | Sid Haig as Ward | John Kowal as Dan Sykes
Director: Ron Winston

15 :01x15 - Operation: Lady Luck

Jan/14/1972
A compulsive gambler keeps getting in O'Hara's way when our hero attempts to smash a ring of counterfeiters.
Guest Stars: Ricardo Montalban as Rick Morris | Allen Ludden as Himself | Betty White as Herself | Lyle Bettger as Fred Bingham | Francine York as Betty Ramsey | Colby Chester as Burt Hale | H.M. Wynant as Arnie Press | Don Haggerty (1) as Zig Helfer | Henry Brandon as Ham Jason | Lyle Talbot as Art Prescott | Barney Phillips as Al Reid | Del Monroe as Mechanic | Marjorie Bennett as Agnes Howett
Director: Sam C. Freedle
Writer: Bill Rega

16 :01x16 - Operation: Deathwatch

Jan/21/1972
O'Hara goes after a smuggler suspected of committing three murders.
Guest Stars: Larry Linville as Detective Ed Pierce | Michael Larrain as Steve Couch | Charles Knox Robinson as Raymond Moore | Leslie Charleson as Helga Kuyper | Felton Perry as Don Eberly | Ben Wright as Uncle Hans | Fred Holliday as Stan Carver | Jack Collins (1) as John Benson
Director: James Neilson

17 :01x17 - Operation: White Fire

Jan/28/1972
O'Hara gets an uneasy feeling when he accompanies a diamond broker to Africa to investigate a diamond smuggling ring.
Guest Stars: Joseph Wiseman as Armand Pringle | Robert DoQui as Paul Stoddard | Hari Rhodes as Rouchinet | John Abbott (1) as Stephen Ravazian | Linda Marsh as Rebecca Kent | Jay Robinson as George Cadlin | Joe E. Tata as Ted Wilson | Jess Barker as Harold Stoneman | Nate Esformes as Schiller | Morris Erby as Desk Clerk | Urrea Jones as Young Man

18 :01x18 - Operation: Dorias

Feb/04/1972
O'Hara must build an income tax evasion case against a con man who specializes in art swindles.
Guest Stars: Jessica Tandy as Genevieve | Donnelly Rhodes as Johnny Guizet | Patricia McCormack as Gilda Julian | Maurice Marsac as Papa Guizet | Martin Kosleck as Dr. Hans Vogel | Michael Fox as Dr. Julian | Doris Dowling as Judge Leslie Dugan | William Bramley (1) as Grover Potter | Hedley Mattingly as Val Valentine | Paul Picerni as Bill Clark | William Betts as Clerk | Hans Conried as Count Anton Brelius
Director: Lawrence Dobkin

19 :01x19 - Operation: Rake-Off

Feb/11/1972
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Guest Stars: Godfrey Cambridge as Win Ethan | Brock Peters as Jess Florian | Nancy Wilson as Poppy Grant | Edward Andrews as Austin Bailey | Alan Dexter as Richard King | Barbara Rhoades as Tina Grace | Yvonne Craig as Inez Malcolm | James Lydon as Lee Foster | Jean Norman as Eleanor | Tony Monaco as Inspector Tom Chaney | Richard Roat as Stanley Turner
Director: Sam C. Freedle

20 :01x20 - Operation: Mr. Felix

Feb/18/1972
O'Hara must find a missing counterfeiter before vengeful racketeers do.
Guest Stars: Dana Wynter as Mrs. Merrill | Carlos Romero as Peter Wade | Warren Stevens as Giles Combs | Norman Lloyd as Felix | John Daheim as Orange Roughy | Craig Curtis as Mark Kiser | Sarah Kennedy as Miss Moscrip | Clark Howat as Dan Gates
Writer: Tony Patino

21 :01x21 - Operation: Good Citizen

Mar/03/1972
The bitter wife of a mobster sets hubby up for a fall but at the same time she endangers O'Hara.
Guest Stars: Martha Hyer as Laura Albin | John Larch as Mike Albin | Scott Walker (1) as Vic Dondine | Larry Pennell as Charles Donaldson | Ahna Capri as Jean Houser | Robert Mandan as George Landy | Sid McCoy as Councilman Hellman | Douglas Kennedy as Policeman
Director: Dick Moder

22 :01x22 - Operation: Smokescreen

Mar/10/1972
O'Hara goes undercover as a dealer in a casino to prove that its owner is hiding cash from the IRS.
Guest Stars: Norman Fell as Leo Walsh | Jack Ging as Arthur Harlan | Paul Picerni as Bill Clark | Leslie Parrish as Olga Miles | Don Stroud as Willie | Carl Ballantine as Doc Ellery | Len Wayland as Walter Land | Marion Brash as Rose Walsh | Bill Williams (1) as Willoughby | William Bryant as John Cossett | Dee Dee Elsinger as Melissa Walsh
Director: James Neilson
Warning: O'Hara, U.S. Treasury guide may contain spoilers
Classification: Scripted
Genre: Drama
Status: Canceled/Ended
Network: CBS ( USA)
Airs: Fridays at 08:30 pm
Runtime: 60 Minutes
Premiere: September 17, 1971
Ended: September 08, 1972
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