Secret Adversary by Agatha Christie. 0.00
In this, her second published mystery, the author introduces Tommy Beresford and Prudence Tuppence Cowley, two characters who subsequently appear in a few other of her novels. Here, Tommy and Tuppence, old friends, reunite after the war (WWI) and decide to start a detective firm, which they name Young Adventures, Ltd. For their first case they set out to find a girl named Jane Finn, who disappeared during the sinking of the RMS Lusitania with a draft treaty in hand that had never been found.