Visiting a reception at the Italian Ambassador's one evening, Raffles and Bunny conspire to steal an item of jewellery which is on display. But for the help of Faustina, a maid who works at the Embassy, they would have been caught. To repay her assistance, Raffles arranges to rescue her from the Embassy where she is being kept against her will by Count Corbucci, the evil Ambassador.

All goes well, but there is a very nasty shock in wait for Raffles, and an endless night.