Episode Guide – ITAT

No. in
Title Directed by Written by Original air date
1 1 “A Thief is a Thief” Leslie Stevens Roland Kibbee & Leslie Stevens January 9, 1968
Guest stars: Senta Berger, Raymond Burr, Leslie Nielsen, Eddie “Rochester” Anderson, Wally Cox, Les Crane, James Drury, Doug McClure, Kurt Kasznar, Joe Louis, Susan Saint James, Michael Forest, Anita Eubank, Willi Koopman, Stuart Margolin and Donald Barry
2 2 “It Takes One to Know One” Leslie Stevens Leslie Stevens January 16, 1968
Guest stars: Mark Richman, Alfred Ryder , Susan Saint James, Len Birman and Francine York
3 3 “When Boy Meets Girl” Don Weis Dean Hargrove January 30, 1968
Guest stars: Suzy Parker, Donnelly Rhodes and David Hurst[1]
4 4 “A Very Warm Reception” Don Weis Leslie Stevens February 6, 1968
Guest stars: Simon Oakland, Katherine Crawford, Gavin MacLeod, Hagan Beggs, Stanley Waxman and Ilka Wwindish[1]
5 5 “One Illegal Angel” Leonard Horn Stephen Kandel February 13, 1968
Guest stars: Fernando Lamas, Kate Woodville, Anthony Zerbe and Francine York[1]
6 6 “Totally by Design” Michael Caffey Teleplay by: Dean Hargrove & Alvin Sapinsley
Story by: Alvin Sapinsley
February 20, 1968
Guest stars: Tina Louise, John van Dreelen, Mari Blanchard, Ron Soble, Oscar Beregi, Jr. and Francine York[1]
7 7 “When Thieves Fall In” Don Weis Leslie Stevens February 27, 1968
Guest stars: Susan Saint James, Mario Alcade, Terry Jenkins, Ben Wright, Ben Astar, Cec Linder, Charlene Holt, Amzie Strickland and Lorna Thayer[1]
8 8 “A Spot of Trouble” Herschel Daugherty Teleplay by: Gene L. Coon
Story by: Gene L. Coon & Mort Zarcoff
March 5, 1968
Guest stars: Katherine Crawford, William Campbell, Cliff Osmond, Joan Patrick and Barbara Rhoades
9 9 “When Good Friends Get Together” Lee H. Katzin Dean Hargrove March 12, 1968
Guest stars: Rosemary Forsyth, Patrick Adiarte
James Shigeta (special guest star)[1]
10 10 “Birds of a Feather” Don Weis Glen A. Larson March 19, 1968
Guest stars: Tisha Sterling, Mark Lenard, Strother Martin, Charlene Holt, Taina Elg[1]
11 11 “To Steal a Battleship” Michael Caffey Jerry Devine March 26, 1968
Guest stars: Bill Bixby, Linda Marsh, Janis Hansen, Maurice Marsac[1]
12 12 “Turnabout” Don Weis Teleplay by: Gene L. Coon
Story by: Gene L. Coon & Mort Zarcoff
April 2, 1968
Guest stars: Ida Lupino, Steve Ihnat, Shannon Farnon, Lawrence Montaigne[1]
13 13 “The Radomir Miniature” Michael Caffey Stephen Kandel April 9, 1968
Guest stars: Ina Balin, Jill Donohue, Richard Van Vleet, Than Wyenn, Eve Plumb[1]
14 14 “Locked in the Cradle of the Keep” Leonard Horn Dick Nelson April 16, 1968
Guest stars: Celeste Yarnall, Marti Stevens, Joe Bernard[1]
15 15 “A Matter of Royal Larceny” Michael Caffey Tony Barrett April 23, 1968
Guest stars: Lynda Day, Henry Wilcoxon, Ben Murphy, Brenda Benet, Don Knight[1]
16 16 “The Lay of the Land” Don Weis Teleplay by: Richard Collins & Alvin R. Friedman
Story by: Richard Collins
April 30, 1968
Guest stars: Hermione Gingold; Sheila Larken (introducing); Larry D. Mann, Stuart Margolin, Helen Funai, Cathy Lee Crosby[1]

No. in
Title Directed by Written by Original air date
17 1 “One Night on Soledade” Don Weis Alan Caillou September 24, 1968
Guest stars: Nancy Kovack, Madlyn Rhue and Logan Ramsey
18 2 “A Sour Note” Don Weis Teleplay by: Gene L. Coon
Story by: Gene L. Coon & Mort Zarcoff
October 1, 1968
Guest stars: Suzanne Pleshette, Harvey Lembeck and Gino Conforti
19 3 “The Bill Is in Committee” Don Weis Elroy Schwartz October 8, 1968
Guest stars: Yvonne Craig, Jocelyn Lane and Roger C. Carmel
20 4 “The Thingamabob Heist” Jack Arnold Burt Styler October 15, 1968
Guest stars: Ricardo Montalban, Bill Russell and Sharon Acker
21 5 “Get Me to the Revolution on Time” Leonard Horn Paul Tuckahoe & Glen A. Larson October 22, 1968
Guest stars: Ivan Dixon, Wende Wagner, Morgan Woodward, Ena Hartman and Rodolfo Hoyos, Jr.
22 6 “The Packager” Leonard Horn Leonard Stadd October 29, 1968
Guest stars: Alex Dreier and Lee Meredith
23 7 “Hans Across the Border: Part 1” Don Weis Glen A. Larson November 12, 1968
Guest stars: Joseph Cotten, Pamela Austin and Willi Koopmann
24 8 “Hans Across the Border: Part 2” Don Weis Glen A. Larson November 19, 1968
Guest stars: Joseph Cotten, Pamela Austin and Willi Koopmann
25 9 “A Case of Red Turnips” Don Weis Mort Zarcoff November 26, 1968
Guest star: Noel Harrison
26 10 “The Galloping Skin Game” Michael Caffey Teleplay by: Gene L. Coon
Story by: Gene L. Coon & Leigh Chapman
December 3, 1968
Guest stars: Richard Kiel, Ricardo Montalban and Martine Beswick
27 11 “Glass Riddle” George Tyne B.W. Sandefur December 17, 1968
Guest stars: Mrs. Robert Wagner (Marion Marshall) and Jason Evers
28 12 “To Catch a Roaring Lion” Marc Daniels Robert Malcolm Young December 31, 1968
Guest stars: George Takei, Brock Peters and Denise Nicholas
29 13 “Guess Who’s Coming to Rio?” Bruce Kessler Glen A. Larson January 7, 1969
Guest stars: Teri Garr, Michael Ansara, Alejandro Rey, Arlene Martel
30 14 “The Artist Is For Framing” Don Weis Glen A. Larson & Marty Roth January 21, 1969
Guest stars: Paul Henreid and Gia Scala
31 15 “The Naked Billionaire” Norman Foster Stephen Kandel January 28, 1969
Guest star: Sally Kellerman
32 16 “A Matter of Grey Matter: Part 1” Jack Arnold Teleplay by: Tony Barrett & Gene L. Coon
Story by: Tony Barrett
February 4, 1969
Guest stars: Joey Heatherton and Barry Williams
33 17 “A Matter of Grey Matter: Part 2” Jack Arnold Teleplay by: Tony Barrett & Gene L. Coon
Story by: Tony Barrett
February 11, 1969
Guest stars: Joey Heatherton and Barry Williams
34 18 “Catspaw” Jerry Hopper Teleplay by: Glen A. Larson & Joel Kane
Story by: Joel Kane
February 18, 1969
Guest stars: Fernando Lamas and Sharon Acker
35 19 “Boom at the Top” Paul Stanley Glen A. Larson February 25, 1969
Guest stars: Carol Lynley, Roddy McDowall and Barry Sullivan

|- ! 2-20 | 11 March 1969 | The Funeral is on Mundy | Julie Newmar |- ! 2-21 | 18 March 1969 | The Baranoff Time Table | Jessica Walter |- ! 2-22 | 25 March 1969 | Rock-Bye, Bye, Baby | Gavin MacLeod, Melodie Johnson, Edmond O’Brien |- ! 2-23 | 1 April 1969 | The Family | Geraldine Brooks, Carla Borelli |- ! 2-24 | 8 April 1969 | 38-23-36 | Nancy Kovack |- ! 2-25 | 15 April 1969 | The Great Chess Gambit | Nehemiah Persoff, Stuart Margolin, María Noel, Greg Mullavey |- ! 2-26 | 22 April 1969 | Mad in Japan | Sharon Acker, Alex Dreier |}

Malachi Throne was no longer a regular cast member by this time, and his Noah Bain was no longer a regular character; Edward Binns‘s Wallie Powers had become Alexander Mundy’s boss.

No. in
Title Directed by Written by Original air date
43 1 “Saturday Night in Venice” Jack Arnold Stephen Kandel September 25, 1969
Guest stars: Delia Boccardo and John Russell
44 2 “Who’ll Bid Two Million Dollars?” Jeannot Szwarc Robert I. Holt October 2, 1969
Guest stars: Edward Binns, Nicoletta Machiavelli and Paola Pitagora
45 3 “The Beautiful People” Jeannot Szwarc Glen A. Larson October 9, 1969
Guest stars: Teri Garr and John Van Dreelen
46 4 “The Great Casino Caper” Jack Arnold Glen A. Larson October 16, 1969
Guest stars: Fred Astaire and Adolfo Celi
47 5 “Flowers from Alexander” Bruce Kessler Glen A. Larson October 23, 1969
Guest star: Senta Berger
48 6 “The Blue, Blue Danube” Bruce Kessler Oscar Brodney October 30, 1969
Guest stars: Martine Beswick and John Russell
49 7 “The Three Virgins of Rome” Jack Arnold Glen A. Larson November 6, 1969
Guest stars: Karin Dor and Edmund Purdom
50 8 “Payoff in the Piazza” Gerd Oswald Oscar Brodney November 13, 1969
Guest stars: David Opatoshu, Rudy Solari, Carla Borelli and John Russell
51 9 “The King of Thieves” Bruce Kessler Glen A. Larson November 20, 1969
Guest stars: Martha Hyer, Edward Binns and Lionel Stander
52 10 “A Friend in Deed” Bruce Kessler B.W. Sandefur November 27, 1969
Guest stars: Henry Silva, Frankie Avalon, Thomas Gomez and John Russell
53 11 “The Second Time Around” Gerd Oswald Glen A. Larson December 4, 1969
Guest stars: Adolfo Celi, Edward Binns and Alice Ghostley
54 12 “The Old Who Came in from the Spy” Gerd Oswald Teleplay by: Sy Salkowitz
Story by: Sy Salkowitz & Jeannot Szwarc
December 11, 1969
Guest stars: Elsa Lanchester, Edward Binns, Francis Lederer and Richard Haydn
55 13 “To Lure a Man” Barry Shear Sy Salkowitz December 18, 1969
Guest stars: Wilfrid Hyde-White and Tina Sinatra
56 14 “The Scorpio Drop” Robert Gist William Bast December 25, 1969
Guest stars: Gale Sondergaard and Eduard Franz
57 15 “Nice Girls Marry Stockbrokers” Barry Shear Teleplay by: Norman Hudis
Story by: Byron Twiggs
January 12, 1970
Guest stars: Michele Carey and Geoffrey Holder
58 16 “The Steal-Driving Man” Glen A. Larson Glen A. Larson January 19, 1970
Guest stars: Dick Smothers, Felicia Farr, Edward Binns and Mario Andretti
59 17 “Touch of Magic” Gerd Oswald Oscar Brodney January 26, 1970
Guest stars: Bette Davis and Edward Binns
60 18 “Fortune City” Barry Shear Sy Salkowitz February 2, 1970
Guest stars: Stefanie Powers and Timothy Carey
61 19 “Situation Red” Joseph Sargent Glen A. Larson February 9, 1970
Guest star: Earl Holliman
62 20 “To Sing a Song of Murder” Barry Shear Norman Hudis February 23, 1970
Guest stars: Joseph Cotten, Will Kuluva and Beah Richards

Special appearance by: The 5th Dimension

63 21 “The Suzie Simone Caper” Don Taylor Teleplay by: William Bast & Oscar Brodney
Story by: William Bast
March 2, 1970
Guest stars: Susan Saint James and Edward Binns
64 22 “An Evening with Alister Mundy” Jack Arnold Glen A. Larson March 9, 1970
Guest stars: Edward Binns, Francesco Mule and Gavin MacLeod
65 23 “Beyond a Treasonable Doubt” Barry Shear Norman Hudis March 16, 1970
Guest stars: Ahna Capri and Joseph Cotten

Cesar Romero (special guest star)

66 24 “Project X” Jack Arnold Glen A. Larson March 23, 1970
Guest stars: Tina Sinatra, Kate Woodville, Edward Binns

Wally Cox (special guest star)