Mannix - Season 1 - Eps 17: Deadfall (1)
The strong friendship between Lew Wickersham and Mannix melts into a violent and deathly feud. The bitter battle begins when Mannix launches an investigation into the theft of a highly secret formula for the development of a laser ray. Stolen plans and sabotage involve Intertect and their agents.
About Mannix

Title: Mannix
First Air Date: 1967-09-16
Last Air Date: 1975-04-13
Status: Ended
Rating: 6.7/10 (from 52 votes)
Language: EN
Seasons: 8
Total Episodes: 194
Network: CBS
Genres: Action & Adventure, Crime, Mystery, Drama
Production Companies: Desilu Productions, Norway Corporation, Paramount Television
Synopsis
Mannix is an American television detective series that ran from 1967 through 1975 on CBS. Created by Richard Levinson and William Link and developed by executive producer Bruce Geller, the title character, Joe Mannix, is a private investigator. He is played by Mike Connors. Mannix was the last series produced by Desilu Productions.
Cast

Mike Connors
Joe Mannix

Gail Fisher
Peggy Fair