Traitor's Purse

The 1943 New Avon Library paperback retitled The Sabotage Murder Mystery is the commonest reprint mistaken for the US first; it is a 17 cm paperback carrying the Avon imprint and, per the LC record, garbles the original title as 'Traitor's curse'. On the US hardcover, a Doubleday, Doran copyright page without the 'First Edition' line is a later printing. No book-club printing of the Heinemann issue is documented in the sources consulted.