The body of millionaire Steven Kester is discovered murdered in the closet by the guests at a lavish costume party being held at Kester's stately country mansion. It's up to shrewd and sarcastic crime novelist Michael Tracy (a spirited and likable performance by Charles Starrett) to figure out the identity of the killer. Director Richard Thorpe, working from a witty and compact script by Andrew Moses, relates the absorbing story at a brisk pace, maintains a firm sense of taut narrative economy throughout, and further spices things up with a pleasing sense of sassy humor (Tracy's barbed exchanges with the police are especially sharp and amusing). Moreover, the able cast play their parts with real zest: Starrett's lively acting keeps the picture humming, the fetching Shirley Grey brings tremendous appeal to her role as Kester's feisty grand daughter Jean, John Wary is suitably gruff as the hard-nosed Inspector Crofton, and Dorothy Revier does well as the touchy Mrs. Pritchard. M.A. Anderson's crisp black and white cinematography makes neat use of fades, wipes, and dissolves. A hugely enjoyable item.