Detective Inspector Lionheart
Professor Edward Dunning
with
Aleister Crowley
Alexander Chetwode Caulfield-Browne

The Nazad Conspiracy:

Lady Walsingham
General Warlock
Bobo the Magnificent, aka Dimitri Kulak
Chief Inspector Fang
Doctor Slither
Dimitri Pavlovich Romanov

The Devil of Denge Marsh:

Sebastian Malherbe
Peter Vanguard
Lord De Saxe
Oliver Gambrell
George and Martha Willow
A.K. Cheesewright

Click here for info on the actors.