A bank heist yields $210,000. Soon, sultry Lona McLane, girlfriend of one of the robbers, meets Paul Sheridan and has a torrid affair. When she finds out Paul's a cop, to save herself she sets out to corrupt him. He's a pushover. But it won't be easy for Paul to get his hands on the money when he's part of a complex, peeping-tom stakeout. Soon, he's in much deeper than he'd planned, amid atmospheric night scenes.