Roger Moore ("Dr. Stevens") is quite effective in this murder-mystery as an eminent psychiatrist who finds himself at the centre of a police investigation into the killing of his assistant and of one of his patients. Desperate to prove his innocence to police lieutenant "McGreavy" (Rod Steiger) and his sidekick "Angeli" (Elliott Gould), he must work out what exactly is going on. Is he the real target? Why? Who? Despite the efforts of a good cast, the writing is a bit lacklustre and it's fairly easy to spot who's pulling the strings - or, at least, who is helping the puppet master fairly early on, thereby robbing the plot of much jeopardy. As to the "why" element of the story, that proves to be really quite contrived, and in best Agatha Christie traditions there are too many new elements introduced near the end for us to have much of a go at playing detective ourselves on that front. It is entertaining to see these old pros on screen together, and that raises the standard somewhat - but basically, it's just a rather light-weight gangster film that you'll forget very quickly.

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