Shock to the System is a black comedy about a middle-aged advertising executive (
Michael Caine) who loses his long-awaited promotion to a younger man (Peter Reigret). In frustration, Caine accidentally pushes a panhandler in front of a subway train--and he gets away with the death. Realizing that committing murder might be a little easier than he previously had thought, he begins plotting the murder of several of his corporate enemies. ~ Stephen Thomas Erlewine, All Movie Guide