A veteran homicide detective who has witnessed his socialite girlfriend kill her husband sees his inexperienced brother assigned to the case.
Roy and Gilbert's fishing trip takes a terrifying turn when the hitchhiker they pick up turns out to be a sociopath on the run from the law. He's killed before, and he lets the two know that as soon as they're no longer useful, he'll kill again. The two friends plot an escape, but the hitchhiker's peculiar physical affliction, an eye that never closes even when he sleeps, makes it impossible for them to tell when they can make a break for it.
In World War II France, American soldier Michael Blake captures, then loses Nazi-collaborator art thief Paul Rona, who leaves behind a gem studded gauntlet (a stolen religious relic). Years later, financial reverses lead Mike to return in search of the object. In Paris, he must dodge mysterious followers and a corpse that's hard to explain; so he and attractive tour guide Christine decamp on a cross-country pursuit that becomes love on the run...then takes yet another turn.
Police Lt. Leonard Diamond vies to bring a clever, well connected, and sadistic gangster to justice all the while obsessing over the gangster's girlfriend.