Shirley Jackson

The Sundial is a 1958 novel by author Shirley Jackson.

Merricat Blackwood lives on the family estate with her sister Constance and her uncle Julian. Not long ago there were seven Blackwoods—until a fatal dose of arsenic found its way into the sugar bowl one terrible night. Acquitted of the murders, Constance has returned home, where Merricat protects her from the …