paper trail book ideas

The Body in the Pneumatic Post

In 1899 Paris, a pneumatic-post mechanic discovers a human finger traveling with an impossible sequence of messages. Following the pressure readings exposes a murder staged beneath the city.

The Duchess Was a Forged Receipt

In 1894, a department-store auditor learns that a celebrated duchess exists only as a series of fraudulent returns. A murdered clerk has signed the final receipt.