Assurance sur la mort

The best film adaptation of a James M. Cain novel ever made (neither version of "The Postman Always Rings Twice" even comes close). The script, by Billy Wilder and Raymond Chandler, is flawless. Wilder's direction is masterful. The cast is phenomenal, with Fred McMurray as a smart-talking but naive chump, Edward G. Robinson as a shrewd and relentless insurance investigator, and Barbara Stanwyck (her very best performance ever, IMO) as a scheming wife who wants her inconvenient husband out of the way.

The smartly-written dialogue still snaps and crackles and the suspense has lost none of its edge in the 70-plus years since the film was made. This is as fine a thriller as you'll ever see and a film that truly deserves being called a classic.