Date: 1955-01-01

Assignment Abroad

Date: 1965-04-02

Asylum for a Spy

Date: 1972-03-06

The Delphi Bureau

Date: 1969-10-27

Destiny of a Spy

Date: 1926-03-07

Secret Orders

Date: 1936-09-09

Spy of Napoleon

Date: 1929-02-17

True Heaven

Date: 1916-10-16

In the Diplomatic Service

Date: 1968-08-22

Negresco

Date: 1995-05-12

Crimson Tide

Date: 1936-10-09

The Sky Parade

Date: 1917-06-16

The Stolen Treaty

Date: 1918-09-01

The Prussian Cur

Date: 2025-03-21

Appalachian Dog

Date: 2023-01-01

My Pet Brother

Date: 1938-12-29

Smashing the Spy Ring

Date: 2018-07-22

Keeper

Date: 1953-02-06

Target Hong Kong

Date: 1929-03-02

The Devil's Chaplain

Date: 1918-08-26

Inside the Lines