Salem's cipher novels

What if everything you thought you knew about Stonehenge was wrong? When agoraphobic genius Salem Wiley lands her dream job as an FBI cryptanalyst, she vows never to return to the witch hunt underworld, where ancient secrets encrypted by hunted women have the power to rewrite history. Her resolve disappears when sweet Mercy Mayfair, the child she is pledged to protect, is kidnapped. As the clock ticks, Salem must face the terrible truth that there...