TV-PG
S8 • E19 Feb 22, 1975 52m8.1
While driving back to Los Angeles, Mannix gives a lift to a black hitchhiker named Perry Riggs. Riggs is soon arrested at a roadblock, however, and charged with the murder of his former boss, a scientist who had been working on a formula for a gasoline replacement. Mannix decides to stay in the town to investigate the circumstances of the man's death -- in the hope that he can find evidence exonerating Riggs.
