Strange Bargain (1949)

Sam Wilson is having a hard time making ends meet. When he asks his boss for a raise, he finds out that the company is closing down and he'll be out of a job. His boss decides to commit suicide so that his family can benefit from his insurance. He asks Sam to help make it look like murder. Sam thinks he has convinced the boss not to commit suicide. But the boss does it anyway, so Sam follows the instructions the boss had given him, to make it look like murder.