When the jury of which Roger Collins is chairman finds Harriet Barnes guilty of murder, she swears vengeance on the entire Collins family, then kills herself.

Soon, Celia Dalton, a guest at Collinwood, starts suffering strange spells. Each time she does, someone at Collinwood is violently attacked. Has Harriet Barnes taken over her spirit, making the innocent girl a bloodthirsty killer? Can Barnabas and Quentin save Celia--and the Collins family--from this menace out of the crypt?