Dead Girls, Weeks R. L., Able Krystle

Sisters, Pierce and Jackson, leave their luxurious lives in Manhattan behind them after their parents suicides, and move to a rainy town in Washington with their bitter Grandmother and her old, creepy mansion.
Level-headed and sensible Pierce is changing, and fiery Jackson must take the place of adult whilst their lives are turned upside down.
A serial killer is hunting red-heads, and with Pierce being the last girl in town to fit the profile, shes on curfew. However, she keeps disappearing with a mystery man into the woods, coming back at night, covered in dirt with no memories and, holding a key to the only door in the mansion thats off limits.
Things arent as the seem in the small town of Ridgeview. The monsters of stories could well be inside the walls of their home as well as outside.
No one is safe, no can be trusted.
Sometimes, the most beautiful smiles hide the darkest secrets...