Jesse Roberts, suffering from postpartum depression, is convinced that doctors—under the guise of treatment—are trying to poison her newborn daughter. Terrified, the young mother flees the hospital with her baby. Her sister, Iris Waterhouse, a journalist, rushes to find them and gradually realizes: what happened to Jesse is connected to a brutal murder that took place in the “Seaview” cottage years ago—after which only one person survived: Rebecca Waterhouse, their mother. But what really happened in the “Seaview” cottage? And what shadows from the tragedy of the past fall on the women of the Waterhouse family? Iris must uncover the truth before it’s too late…