格兰特·威瑟斯
GranvilleG.Withers
饰：Officer Pat O'Hara
阿德里安·莫里斯
Adrian Morris
饰：Officer Sam Maloney
Kay Hughes
饰：Molly Selkirk (as Catherine Hughes)
Mickey Rentschler
饰：Pinky Adams
Silver Wolf
Silver Wolf
饰：Irish
Gordon Hart
饰：W.H. Harrison [Chs. 1-10]
Frank Lackteen
饰：Mr. Tahata, alias Warner the Great
C. Montague Shaw
饰：Mr. Wellington (as Montague Shaw)
哈里·达文波特
Harry Davenport
饰：John P. Adams, inventor [Ch. 1]
惠勒·奥克曼
Wheeler Oakman
饰：Stevens, gang chemist
Max Hoffman Jr.
饰：Harry Selkirk [Chs. 1-7]
杰克·茂豪尔
Jack Mulhall
饰：Desk Sergeant
Earl Dwire
饰：Jeremiah Crockett
Leonard Lord
饰：Franklin, the real Tahata
Dick Botiller
饰：Henchman Zutta
Louis Vokali
Louis Vokali
饰：Henchman,Off-screen Trainer of Silver Wolf
厄尼·亚当斯
Ernie Adams
饰：Hobo [Ch. 11] (uncredited)
Hooper Atchley
饰：Casey, Police Official [Chs. 1, 8, 11] (uncredited)
斯坦利·布莱斯通
Stanley Blystone
饰：Plant Foreman [Chs. 4, 7-8] (uncredited)
Richard Cramer
饰：Charlie, the police dispatcher (uncredited)
Jack Gardner
饰：Intern [Ch. 5] (uncredited)
Pat Gleason
Pat Gleason
饰：Henchman Blake (uncredited)
威廉·古尔德
William Gould
饰：1925 Police Chief [Chs. 1, 8] (uncredited)
Al Herman
饰：Hobo finding suitcase [Ch. 11] (uncredited)
凯里·洛夫廷
Carey Loftin
饰：Pollard's Henchman [Chs. 5-11] (uncredited)
汤姆·朗顿
Tom London
饰：Henchman Eddie Lewis (uncredited)
蒙特·蒙塔古
Monte Montague
饰：Henchman James Pollard [Chs. 2-8] (uncredited)
Charles B. Murphy
Charles B. Murphy
饰：Hobo-Henchman [Chs. 9-10] (uncredited)
Eddie Parker
饰：Police Dispatcher [Ch. 1],Steel Mill worker [Ch. 1, 7] (uncredit
Henry Roquemore
饰：The Chef [Ch. 4] (uncredited)
William Royle
饰：Inspector Clark [Chs. 8-12] (uncredited)
汤姆·斯蒂尔
Tom Steele
饰：Police Car 27 Driver (uncredited)
弗兰克·萨利
Frank Sully
饰：Henchman Flynn (uncredited)
雷·蒂尔
Ray Teal
饰：Henchman Perkins [Chs. 9-12] (uncredited)
哈利·坦布鲁克
Harry Tenbrook
饰：Henchman (uncredited)
Jim Toney
饰：Henchman (uncredited)
Florence Wright
饰：Pollard's Secretary [Ch. 8] (uncredited)
Charles Murphy
Charles Murphy