The Free Kindle Book of the Day is The Killing Room by John Manning. From the synopsis:
Old houses have their secrets. The Young residence–a beautiful Maine mansion overlooking the Atlantic–is no exception. But the secrets here are different. They can kill. . .
The Only Way Out
Carolyn Cartwright, private detective and ex-FBI agent, has been hired by Howard Young to investigate a string of gruesome family deaths. The crimes are horrific, brutal, and senseless. And the time has come for the killing to begin again. . .
Is To Die
One by one, members of the Young family are chosen to die. Old and young, weak and strong, no one is safe from a killer with a limitless thirst for revenge. And the only way for Carolyn to uncover the shocking truth is to enter the room no one has ever left alive–and make herself the next target. . .
Praise for John Manning’s debut All the Pretty Girls Are Dead
“Brilliantly executed. . .this one is not to be missed!”–Kevin O’Brien, New York Times bestselling author
“If you like Dean Koontz, you’ll love John Manning!” –Wendy Corsi Staub, New York Times bestselling author