Just at a point when he has everything to live for, wealthy Dave Rainey is stricken down with polio. Now confined to an iron lung, Rainey obsesses over the possibility that his wife, Cindy, plans to kill him. When Cindy falls for a handsome stranger named Arnold Barrett, it would appear that Rainey's fears are about to be realized -- but as we all know, appearances on Alfred Hitchcock Presents have a habit of being deceiving.

Would-be gangland assassin Art is given a test by his boss, Barbossa -- a test that will prove fatal should Art fail. Assigned to kill an out-of-favor Barbossa henchman named Moran, Art bungles the job. Surprisingly, Moran doesn't kill Art, but instead arranges a deal whereby Art will knock off Barbossa for a tidy fee. Figuring that neither he nor Moran owe Barbossa a thing, Art accepts...and then....