In The Affair of the German Dispatch-Box, Hazell hatches a daring plan to retrieve a highly sensitive government document before it reaches the German Ambassador.
In Sir Gilbert Murrell's Picture, When an entire wagon containing valuable paintings disappears from a goods train, Hazell's skill is needed.
In The Affair of the Corridor Express, a multimillionaire's son disappears from a moving train. Hazell must find the kidnappers before the boy is lost forever.
In The Stolen Necklace a lady begs Hazell to help when the diamond necklace that she borrowed is stolen from her suitcase.
In The Affair of the Birmingham Bank, customers keep drawing money from a Midlands bank, so gold reserves are sent by train. Hazell must guard against train robbery.