September 23, 1973
A quiet town is ruffled by Mannix in his search for a missing youth.
Episode 5
The Gang's All Here
October 14, 1973
A street gang plots to do Mannix in to make a name for itself.
Episode 6
Desert Run
October 21, 1973
A search inquiry proves hazardous, and Mannix finds his client is a ringer.
Episode 8
A World Without Sundays
November 4, 1973
A girl disappears, and Mannix investigates her Vegas connection.
Episode 9
Sing a Song of Murder
November 11, 1973
An opera diva emerges from retirement and is met with inexplicable attempts on her life.
Episode 10
Search in the Dark
November 25, 1973
Mannix tracks down stolen jewels also wanted by a blind hood.
Episode 12
Cry Danger
December 9, 1973
An old girlfriend makes Mannix the man in the middle of rival smugglers.
Episode 13
All the Dead Were Strangers
December 16, 1973
A plane crash is followed by murder attempts.
Episode 14
Race Against Time (1) (a.k.a.) A Matter of the Heart
January 6, 1974
A patriot in a dictatorship needs medical help.
Episode 15
Race Against Time (2) (a.k.a.) A Matter of the Heart
January 13, 1974
The patriotic resistance finds a traitor amongst them.
Episode 16
The Dark Hours
January 20, 1974
In possession of a piece of evidence, Mannix is shot and left for dead.
Episode 20
Rage to Kill
February 24, 1974
A psychiatrist who treats sociopaths is supposed to have committed suicide.
