How can a case containing £100,000 in gold bullion, sealed with the seal of the Bank of England and shipped in the custody of a trustworthy captain, disappear from on board a sailing ship? In this classic golden age short story, one or more of the passengers knows the answer... Frank Heller was the pseudonym of Gunnar Serner, who was the first internationally famous Swedish crime writer. The son of a clergyman, to avoid arrest after a financial fraud he left Sweden for the continent. After losing the swindled money in a casino in Monte Carlo, he tried his hand at writing novels with immediate success, and produced forty-three novels, short stories and travelogues before his death in 1947.