Mrs Macatta

Mrs. Macatta is a Member of Parliament (MP) in the original short story "The Incredible Theft". She is a guest at the house party thrown by Charles Mayfield during which some plans of a new bomber aircraft are stolen. However Mrs Macatta was ruled out as a plausible suspect because during the time of the theft, she was in bed. Her room is next to the housekeeper's and she could be heard snoring.

Mrs Macatta is described as a woman of "somewhat alarming prospect" and "great earnestness of purpose". She is an authority on Housing and Infant Welfare and talks shop whenever she can find an opportunity.