Three Steps in the Dark

Nicholas Hannen is rewriting his will. Then he is murdered, and the new will disappears. Good thing that there's a single family member in the closed room with him when the two shots are fired, and then elderly servant Katie Johnson opens the door and finds them there. Then she drops the tray containing the drinks and crystal. Wait. Two shots?

It's one of those locked room mysteries in which the murder doesn't happen until about a third of the way through it, and there are plenty of motives for killing. Greta Gynt and Hugh Sinclair headline the cast, but this 61-minute programmer doesn't waste any time on character. Still, for a locked-room mystery, it's pretty good.