Title: N or M?

Publisher: Dodd, Mead and Company

Year of publication: 1941        Publication month: August

Printed by: ?

First edition in Sweden: N eller M? 1942 (Bonniers detektivromaner)

Cover: ?

Binding: Hardcover with dust jacket.

Price: $ 2.00

Number of pages: 289 pages.

Main Characters/Detectives: Tommy and Tuppence Beresford

Comment: The (detective) novel is originally published in a serialised version; N or M? 1941 (Redbook Magazine).