Margaret Rutherford

When Miss Jane Marple joins a theatrical company after a blackmailer is murdered, several members of the troupe are also dispatched by this mysterious killer.

After Miss Jane Marple is made a trustee of a merchant marine training vessel, a fellow trustee is poisoned, and ship's officers are later murdered after she comes on board.

When a wealthy old man appears to have been "frightened to death" by a cat, Miss Jane Marple suspects one of his four relatives, all heirs to his estate, of his murder.