A Close Call for Boston Blackie

Horatio 'Boston Blackie' Black / Cyrus Peyton

Geraldine 'Gerry' Peyton

Inspector Farraday

Sgt. Matthews

The Runt

Mamie Kirwin

Attorney Harcourt (uncredited)

Hack Hagen (uncredited)

Smiley Slade (uncredited)

Policeman (uncredited)

Coroner (uncredited)

Tenant in Hallway (uncredited)