Blackwell's Island

Tim Haydon

Mary 'Sunny' Walsh

Terry Walsh

Thomas MacNair

'Bull' Bransom

Steve Cardigan

Stuart Granger

Brower

Pearl Murray

Benny Farmer

Mike Garth

Ben Rawden

Captain Pedersen

Hempel

Ballinger (uncredited)

Cash Sutton (uncredited)

Prison Vendor (uncredited)

Police Officer (uncredited)

Headkeeper Jameson (uncredited)

Policeman at Ballinger's (uncredited)

Guard (uncredited)

Convict (uncredited)

First Dockworker (uncredited)

Finlay (uncredited)