The Killing Doll

In a quiet house in the London suburb of Manningtree, fifteen-year-old Pup and his emotionally damaged older sister, Dolly, have become closer than ever since the death of the their mother. Pup's bookish obsession with witchcraft gives their disordered life a sense of purpose. Dolly isn't sure what to expect from the talisman Pup makes her, until their father brings home a vulgar new wife. Then, Dolly, resentful and suddenly empowered, makes a deadly wish—the first of many.
 
In a depressed neighborhood on the other side of town, a paranoid hermit has been questioned in a series of brutal murders. Lately, he's taken to living in a tunnel behind a fort of mattresses, where he keeps his knives. Soon, his life and the lives of Pup and Dolly will converge. As one of them struggles toward something close to sanity, the other two will descend even further into darkness.