Cast
Police Chief Martin O'Brien
Det. Lt. Bannister / Det. Lt. Bill Bannister
Dr. Clayton Maxton / Dr. Clayton Maxton - aka Prof. Mortis
Highway Patrolman [Chs. 8, 11]
Blair - Police Lab Technician [Ch. 1]
Richards - Police Lab Tech. [Chs. 9, 11]
Police Chemist Crandall / Crandall - Police Lab
Byrnes - Armored Car Driver [Chs. 8-9]
Gardner - Police Officer [Ch. 3]
Detective at Taboni Interrogation [Ch. 2]
Ground Radioman at Airport [Ch. 2]
Frenchy Ludoc / Frenchy Ludoc [Chs. 5, 7-8]
Ludoc's Bartender [Chs. 5, 7-8]
Policeman at Bank [Ch. 7]
Joey Morrison, alias Mason / Joey Morrison - aka Mason
Taboni's Landlady [Ch. 1]
Police Desk Sergeant [Ch. 2]
Police HQ Radio Disptacher [Ch. 2-4, 7]
Police Direction Finder - Car 64 [Ch. 1]
Detective Assigned to Trail Barnard [Ch. 2]
Soupy Collins [Chs. 10-11]
Mr. Wilkerson / Wilkinson
Henry - Crooked Watchman [Chs. 7-8]
Police Direction Finder [Ch. 6]
Bruiser Ludoc's Doorman-Henchman [Chs. 5, 8]
Railroad Station Master [Ch. 11]
McKay - Payroll Henchman [Chs. 8-9]
Jim Bannister / Jim Bannister [Ch. 1]
Police Direction Finder - Car 27 [Ch. 1]
Ted Lane, alias Mr. Bernard / Ted Lane - aka Barnard
Rogan's Death Witness [Ch. 4]
