When Countess Zorah Rostova asks London barrister Sir Oliver Rathbone to
defend her against a charge of slander, he is astonished to find himself
accepting. For without a shred of evidence, the countess has publicly
insisted that the onetime ruler of her small German principality was
murdered by his wife, the woman who was responsible for the prince's
exile to Venice twenty years before. Private investigator William Monk
and his friend Hester Latterly journey to the City of Water in an
attempt verify the countess's claims, and though the two manage to
establish that the prince was indeed murdered, as events unfold the
likeliest suspect seems to be Countess Zorah herself.