[en] The Invisible Circle
[en] The Crimson Fog Locked Room International
[en] [Dr. Twist 05] • The Tiger's Head Locked Room International
[en] [Dr. Twist 07] • The Demon of Dartmoor Locked Room International
[en] [Dr. Twist 06] • The Seventh Hypothesis Createspace Independent Publishing Platform
[en] [Dr. Twist 02] • Death Invites You Createspace Independent Publishing Platform
[en] The Helm of Hades Locked Room International
[en] [Dr. Twist 04] • The Madman's Room Createspace Independent Publishing Platform
[fr] [Owen Burns 03] • Les Douze Crimes D'Hercule Librairie des Champs-Elysées
[it] [Dr. Twist 04] • La camera del pazzo Mondadori
[en] Penelope's Web
[en] The Demon of Dartmoor Locked Room International