A half-eaten apple provides the only clue to the location of a kidnapped teenager buried alive with a 24-hour supply of oxygen.

A hijacked airliner holds terrorists, passengers and a contagious, deadly virus; guests Gerald S. O'Loughlin, Christine Belford.

A congenital brain flaw could kill a high-school athlete (Scott Colomby) if he goes on playing football; guest Eugene Roche.

An innocent longshoreman (Robert Walker) takes the blame for the brutal murder of a hated loan shark (Roy Jenson).

Sam pleads with Quincy not to violate tradition by performing an autopsy on a Japanese martial-arts movie star; guest Keye Luke.

An unidentified ailment is killing cattle and striking residents of a small ranching community; guests Elisha Cook, Guy Stockwell.