
1917
Police headquarters has been plagued by a series of robberies, culminating in the theft of a priceless necklace smuggled from Europe. The detectives are on the track of a gang led by master thief Ramon Mordant and his accomplice known as "the Face" because of his twisted and hideous countenance.

Ruth Clifford
Clara Hawthorne

Rupert Julian
Prentice Tiller

Frank Brownlee
Ramon Mordant

Wedgwood Nowell
Stephen Pitt (as Wedgewood Nowell)

Harry L. Rattenberry
O'Meara (as Harry Rattenberry)

E. Alyn Warren
Rosario (as E.A. Warren)

Lloyd Whitlock
Banning

William Higby
Chief Detective

The Blood Seedling

The Scarab Murder Case

Chains of Evidence

The Winged Mystery

The Phantom's Secret

The Girl in the Dark

The Two-Soul Woman

After the Fog

Love Without Question

The Mystery of Lake Lethe

The Flashlight

File 113

The Empty Cab

A Scandal in Bohemia

The Adventure of the Ambassador's Disappearance

A Blind Bargain

The Fourth Witness

The Social Code

At the Sign of the Jack'O Lantern

The Dream Woman