A tightly wound thriller buoyed by a great James Coburn performance. He plays a doctor in Boston trying to find out who caused the death of the daughter of the hospital's chief of staff. He runs into one roadblock after another as he tries to clear a colleague (James Hong) of the crime. Coburn has never been so good and the supporting cast is first rate: Pat Hingle, Dan O'Herlihy, Michael Blodgett as a very sleazy masseuse. Jennifer O'Neill is the love interest & she's terrific. Directed with a lot of finesse by Blake Edwards with a very clever script by John Black (based on a book by Michael Crichton). Edward makes great use of the Boston locations, including some of the sleazier sections of town. The cinematography is by Frank Stanley.