Chevy Chase stars in this comedy directed by Michael Ritchie. Fletch (Chase), a newspaper reporter with a talent for disguise, is working undercover to catch a gang of drug traffickers when he meets wealthy businessman Stanwyk (Tim Matheson). Claiming to be suffering from terminal cancer, Stanwyk asks Fletch to engineer a break-in to his mansion and bump him off so that his wife can claim the life insurance. Sensing something is not quite right, Fletch goes undercover to investigate.