Title: The Thumb Mark of St Peter

Published in: The Royal Magazine

Year of publication: 1928        Publication month: May

Issue: Vol. 60, No. 355

Printed by: ?

Original book publication: The Thirteen Problems 1932 (British edition)
Published in the US the following year under the title The Tuesday Club Murders.

First publication in Sweden: Affären Geoffrey Denman 1928 (Stockholms-Tidningen on June 17)

Illustrations: Gilbert Wilkinson

Price: ?

Number of instalments: One instalment.