Isolation by Michelle Garza and Melissa Lason

Amelia is a young woman adrift in a sea of misery, a widow on the edge of being destitute after her husband commits suicide. Her only inheritance is Port Rock, an aging estate surrounded by the endless rolling sea, a tomb in the middle of the water. Forced to accept an inheritance that no one should claim. Amelia soon learns there is a reason no one chooses to live in that mansion. There is nowhere to run when the darkness is waiting with open arms, nowhere to hide when the walls have eyes, surrounded by the open maw of the waiting sea no way to escape from a place so isolated.

From the Bram Stoker nominated authors known as The Sisters of Slaughter, comes a tale of wronged spirits, a cursed island and an eternity of suffering.