Séance.

Novelist Emma Strand is on vacation at the seaside in 1892 California with her second husband Albert when she encounters her first husband George and his mentally unstable new wife, Lillian. Emma and Albert take refuge from a sudden storm at George and Lillian's mansion. Over the course of the evening, Emma must confront her past, the temptation of adultery, and the disturbing possibility the house is haunted by George and Lillian's recently drowned daughter Hazel.