The wife was having an affair and they have to go through a bullet trick routine in which the husband forces the lover through some means to fire a bullet at the end of the act, which the wife is supposed to catch in her teeth.
A Los Angeles PD detective and a US Customs Inspector are on the trail of a drug smuggler they know is planning to smuggle a large amount of pure heroin through the L.A. waterfront. They have already caught one of the smuggler's couriers, but he's too scared to rat out his boss, a man named Thatcher. The cops get a lead that a boat will be coming into L.A. harbor with Thatcher aboard, but they don't know what he looks like. When the plan to catch Thatcher goes awry, the chase is on.
Just after moving into a partly furnished home, a husband leaves his wife alone to make an out-of-town business trip. An unexpected visitor and the half-empty house create strange fears in the wife's mind.