"England, 1917. Reeling from the death of her fianc�e, Stella Marcham welcomes the opportunity to stay with her pregnant sister, Madeleine, at her imposing country mansion, Greyswick - but she arrives to discover a house of unease and her sister gripped by fear and suspicion. Before long, strange incidents begin to trouble Stella - sobbing in the night, little footsteps on the stairs - and as events escalate, she finds herself drawn to the tragic...