Laura Oakley

饰：Laura - Quest`s Assistant

Frank MacQuarrie

饰：John Craig

Hylda Hollis

饰：Mrs. Bruce Rheinholdt

赫伯特罗林森

Herbert Rawlinson

饰：Sanford Quest

安·蕾托

Ann Little

饰：Lenora MacDougal

威廉·沃辛顿

William Worthington

饰：Prof. Ashleigh

弗兰克·洛伊德

Frank Lloyd

饰：Ian MacDougal

Beatrice Van

饰：Ashleigh`s Daughter

J. Edwin Brown

Dorothy Brown

哈利·坦布鲁克

Harry Tenbrook

Duke Worne

Mark Fenton

饰：Inspector French

Lionel Bradshaw

Lionel Bradshaw