More than a million dollars in government bonds have vanished from a locked bank vault—and the only visible clue is a tiny disk of steel.

New York lawyer Lawrence Duncan is drawn into the mystery after receiving an urgent telephone call from wealthy real estate dealer Martin Anderson. George Rhodes, a young Municipal Bank employee who hopes to marry Anderson’s daughter, has discovered that a valuable packet of bonds has disappeared from the vault under his supervision.

The doors were locked. The time-lock was still running. No one should have been able to enter.

With suspicion closing around Rhodes and a devastating scandal threatening his future, Duncan turns to renowned special investigator Lawrence Rand. Calm, observant, and relentlessly logical, Rand examines the bank’s machinery, questions those closest to the case, and uncovers an apparently insignificant object on the vault floor: a small, worn steel disk.

That overlooked fragment may reveal how the impossible robbery was committed—and expose a criminal scheme years in the making.

Set amid the banks, offices, courtrooms, and crowded streets of early twentieth-century New York, *The Mystery of the Steel Disk* is a fast-moving locked-vault mystery featuring clever deduction, financial intrigue, romance, and an ingenious mechanical clue.

A compelling rediscovery for listeners who enjoy classic detective fiction, vintage crime stories, and mysteries in the tradition of Sherlock Holmes.

Narrated by Michele Wagner.