A surgeon with scandalous secrets is murdered in the middle of an operation. Which of those with a motive in the room could have done it? And just how did the killer manage to have the lights go out to facilitate the crime? Bruce Cabot is the lead as a doctor who is one of the chief suspects, with Helen Mack as his love interest. Some comic relief is provided by Tom Dugan as an ambulance driver and wannabe amateur detective and by Mabel Todd as a wisecracking nurse. A brisk pace keeps this one entertaining.

  Mildly recommended. Otto judiciously thinks this movie is OK, but not great.

Movie 140 for 2021.