A chemist rigs a bomb in his uncle's car to gain control of his uncle's company, then plants clues to make Columbo suspicious of the company's Vice-President.
Quest roles:
Lew Brown(2nd Detective), Ida Lupino(Edna Brown), James Gregory(David Buckner), Anne Francis(Sharon Martin), Stuart Nisbet(Doctor Sullivan), William Windom(Burt Gordon), Roddy McDowall(Roger Stanford), Steve Gravers(Sergeant), Rosalind Miles(Nancy), Jim Neumarker(Plainclothesman), Eddie Quillan(Ferguson), Annette Molen(Girl), Jason Wingreen(Policeman), Lawrence Cook(Quincy)