Enter Certain Murderers — Sara Woods

Antony Maitland is deeply involved in a case. He's looking forward to a little rest when he gets home. What he gets instead is a visit from good friend, Meg Hamilton. Meg is an actress by profession, but her visit is strictly personal--the man she wants to marry is about to be charged with murder, and she wants Antony to Do Something.

Roger Farrell is the man, and his story is simple enough. His mother was being blackmailed, and rather than ask for help, she killed herself. The police think that Roger has tracked down the blackmailer and killed him. Roger says the man was already dead. Antony is not sure who to believe, but he knows he's got to help Meg. What he doesn't know is that he will wind up in danger himself.