S10E09: Undercover
A photograph is the only clue for Columbo when two dead men and a seven year old mystery with $4 million dollars involved as well as an obnoxious insurance investigator come into play.
Previous Episode 
Season 1
Murder by the Book
S1E1 / 15 Sep 1971
Death Lends a Hand
S1E2 / 06 Oct 1971
Dead Weight
S1E3 / 27 Oct 1971
Suitable for Framing
S1E4 / 17 Nov 1971
Lady in Waiting
S1E5 / 15 Dec 1971
Short Fuse
S1E6 / 19 Jan 1972
Blueprint for Murder
S1E7 / 09 Feb 1972
Season 2
Étude in Black
S2E1 / 17 Sep 1972
The Greenhouse Jungle
S2E2 / 15 Oct 1972
The Most Crucial Game
S2E3 / 05 Nov 1972
Dagger of the Mind
S2E4 / 26 Nov 1972
Requiem for a Falling Star
S2E5 / 21 Jan 1973
A Stitch in Crime
S2E6 / 11 Feb 1973
The Most Dangerous Match
S2E7 / 04 Mar 1973
Double Shock
S2E8 / 25 Mar 1973
Season 3
Lovely But Lethal
S3E1 / 23 Sep 1973
Any Old Port in a Storm
S3E2 / 07 Oct 1973
Candidate for Crime
S3E3 / 04 Nov 1973
Double Exposure
S3E4 / 16 Dec 1973
Publish or Perish
S3E5 / 18 Jan 1974
Mind Over Mayhem
S3E6 / 18 Feb 1974
Swan Song
S3E7 / 03 Mar 1974
A Friend in Deed
S3E8 / 05 May 1974
Season 4
An Exercise in Fatality
S4E1 / 15 Sep 1974
Negative Reaction
S4E2 / 15 Oct 1974
By Dawn's Early Light
S4E3 / 27 Oct 1974
Troubled Waters
S4E4 / 09 Feb 1975
Playback
S4E5 / 02 Mar 1975
A Deadly State of Mind
S4E6 / 27 Apr 1975
Season 5
Forgotten Lady
S5E1 / 14 Sep 1975
A Case of Immunity
S5E2 / 12 Oct 1975
Identity Crisis
S5E3 / 02 Nov 1975
A Matter of Honor
S5E4 / 01 Feb 1976
Now You See Him
S5E5 / 29 Feb 1976
Last Salute to the Commodore
S5E6 / 02 May 1976
Season 6
Fade in to Murder
S6E1 / 10 Oct 1976
Old Fashioned Murder
S6E2 / 28 Nov 1976
The Bye-Bye Sky High I.Q. Murder Case
S6E3 / 22 May 1977
Season 7
Try and Catch Me
S7E1 / 21 Nov 1977
Murder Under Glass
S7E2 / 30 Jan 1978
Make Me a Perfect Murder
S7E3 / 25 Feb 1978
How to Dial a Murder
S7E4 / 15 Apr 1978
The Conspirators
S7E5 / 13 May 1978
Season 8
Columbo Goes to the Guillotine
S8E1 / 06 Feb 1989
Murder, Smoke and Shadows
S8E2 / 27 Feb 1989
Sex and the Married Detective
S8E3 / 03 Apr 1989
Grand Deceptions
S8E4 / 01 May 1989
Season 9
Murder, a Self Portrait
S9E1 / 25 Nov 1989
Columbo Cries Wolf
S9E2 / 20 Jan 1990
Agenda for Murder
S9E3 / 10 Feb 1990
Rest in Peace, Mrs. Columbo
S9E4 / 31 Mar 1990
Uneasy Lies the Crown
S9E5 / 28 Apr 1990
Murder in Malibu
S9E6 / 14 May 1990
Season 10
Columbo Goes to College
S10E1 / 09 Dec 1990
Caution: Murder Can Be Hazardous to Your Health
S10E2 / 20 Feb 1991
Columbo and the Murder of a Rock Star
S10E3 / 29 Apr 1991
Death Hits the Jackpot
S10E4 / 15 Dec 1991
No Time to Die
S10E5 / 15 Mar 1992
A Bird in the Hand...
S10E6 / 22 Nov 1992
It's All in the Game
S10E7 / 31 Oct 1993
Butterfly in Shades of Grey
S10E8 / 10 Jan 1994
Undercover
S10E9 / 02 May 1994
Strange Bedfellows
S10E10 / 08 May 1995
A Trace of Murder
S10E11 / 15 May 1997
Ashes to Ashes
S10E12 / 10 Aug 1998
Murder With Too Many Notes
S10E13 / 12 Mar 2001
Columbo Likes the Nightlife
S10E14 / 30 Jan 2003
