The Great Office Mystery

Sexton Blake tracks down a gang who have stolen secrets from a rocket site.

A detective saves his boy assistant from a bank swindler after escaping a fire by overhead cable.

A girl frames a drunkard for a gem theft. The detective is saved from the crook's launch by a boy's 60-foot dive.

A detective saves the kidnapped daughter of an inventor murdered for his formula.

A Sexton Blake mystery.

Sixth release in the 'Sexton Blake' series of short crime dramas.

Sexton Blake and Tinker foil criminal plot connected with the Tongs, and master-minded by "famous stamp collector" and millionaire.

A Count catches a detective posing as a foreign war minister and hangs him over Beach Head with a fuse.

Third release in the 'Sexton Blake' series of short crime dramas.

A private detective and his young assistant solve crimes.

A detective saves a clerk from a gang who tie him to a clock-operated gun.

A crook poses as a Lord to rob a merchant and holds a detective captive in his cellar.