The Figure of Eight: A 'Perrins, Private Investigators' Mystery

"Would it interest you to discover the identity of the man who boarded the bus at Piccadilly Circus with Lola Martinaes at about ten o'clock last Friday evening?"

A woman is found sleeping on a London bus-so deeply asleep, in fact, that she cannot be woken. After being taken to hospital, the woman dies. She is identified as Lola Martinaes, a native of Montedoro-a Central American country whose volatile politics might lead to a world war.

There is no apparent evidence of foul play in Lola's de...