比利·哈洛普

Billy Halop

饰：Billy Adams

亨兹·豪尔

Huntz Hall

饰：Toby Nelson

Gabriel Dell

饰：Bilge

Bernard Punsly

饰：Butch

哈尔·E·切斯特

Hal E. Chester

饰：Swab (as Hally Chester)

Joe Recht

饰：Lug

威廉·霍尔

William Hall

饰：Brack Warren

约翰·麦圭尔

John McGuire

饰：Tom Adams

玛丽·菲尔德

Mary Field

饰：Aggie Nelson

爱德华·基恩

Edward Keane

饰：Elliott Carlton [Chs. 1-7]

Marcia Ralston

饰：Leah Carlton

里德·哈德利

Reed Hadley

饰：Carl Tonjes

斯坦利·布莱斯通

Stanley Blystone

饰：Capt. Olaf Nelson

理查德·亚历山大

Richard Alexander

饰：Jenkins

厄尼·亚当斯

Ernie Adams

饰：Zeke - Skipper of the 'Mary Lou'

Jack Clifford

饰：Pug Anderson [Chs. 1-6]

Richard Bond

饰：Krans, Agent X-39 [Chs. 4, 6]

Morgan Wallace

饰：Capt. Lester [Chs. 1-3, 6-7]

埃迪·邓恩

Eddie Dunn

饰：Whaler Captain [Chs. 8-9]

James Blaine

饰：Desk Sergeant [Ch. 7] (uncredited)

Ed Cassidy

饰：Guard at Hospital [Ch. 6] (uncredited)

杰克·奇塔姆

Jack Cheatham

饰：Duke [Ch. 1] (uncredited)

迪克·柯蒂斯

Dick Curtis

饰：Mate on the 'Astoria' [Chs. 4-5] (uncredited)

艾尔·希尔

Al Hill

饰：Speeding motorist [Ch. 2] (archive footage) (uncredited)

Jack Holmes

饰：(uncredited)

Bill Hunter

饰：Policeman [Chs. 3-4] (uncredited)

Guy Kingsford

饰：Sven, whaler crewman [Ch. 9] (uncredited)

Jerry Mandy

饰：Tony, grocer [Chs. 1-2] (uncredited)

John Merton

John Merton

饰：First Island Guard [Chs. 10-11] (uncredited)

Bill Moss

Bill Moss

饰：(uncredited)

杰克·茂豪尔

Jack Mulhall

饰：'Dolphin' Radioman [Chs. 1-2] (uncredited)

Paul Newlan

饰：Chris, Second island guard [Chs. 11-12] (uncredited)

Eddie Parker

饰：Coral Strand crewman [Chs. 6-9] (uncredited)

Jack Perrin

饰：Island Guard-Launch pilot [Ch. 12] (uncredited)

小豪斯·彼得斯

House Peters Jr.

饰：Agent Burke [Ch. 4] (uncredited)

Hans Schumm

饰：Sub Captain [Chs. 9, 11-12] (uncredited)

George Sherwood

饰：Island Guard (uncredited)

Mickey Simpson

饰：Angry Motorist [Ch. 2] (uncredited)

汤姆·斯蒂尔

Tom Steele

饰：Coral Strand crewman [Ch. 6],Whaler crewman [Chs. 8-9] (uncredit

Bob Stevenson

Bob Stevenson

饰：(uncredited)

Forrest Taylor

饰：Fenwick, the inventor [Chs. 1, 5, 9, 12] (uncredited)

Frank Wayne

Frank Wayne

饰：Fenwick's Guard [Ch. 12] (uncredited)

Duke York

饰：Pete, whaler crewman [Chs. 8-9] (uncredited)

Larry Grenier

Larry Grenier

饰：Island Guard (uncredited)

Joe Pope

Joe Pope

饰：(uncredited)

Anthony Rogers

Anthony Rogers

饰：Jim, police boat pilot [Chs. 2, 6] (uncredited)

Jack Rube Clifford

饰：Pug Anderson [Chs. 1-6],(as Jack Clifford)