Lord Montbarry breaks off his engagement to Agnes Lockwood and marries the Countess Narona, with whom he lives in a Venetian palace. When he dies, Agnes Lockwood becomes suspicious of the circumstances, and goes to Venice with other family members to investigate. Staying in Montbarry's former residence, they experience a haunting.
In addition to its stand-alone volume, this title was published in the follow books. It can be rated independently of any volumes containing it.
