I've not read The Keeper yet, but it sounds pretty good!
"Elizabeth is a brilliant loner with a troubling secret she doesn't even know. As if the trauma of her mother being abducted before her eyes as a young girl wasn't enough, the small town she lives in thinks she’s crazy. That all changed when she met Michael, a mysterious and handsome man who identified with her like no one else before. Michael’s long time friend Vincent visits and drops the bombshell of a lifetime on Elizabeth and her world becomes completely unraveled. Vincent’s information has revealed the world for what it is; a place where the impossible is real, and myths and legends walk slyly in shadow. A world that Elizabeth will learn she too is a member. Now, the three are caught up in a thousand year long conspiracy they never could have imagined. The three must rely on one another and the secret connection they all share if they have a chance to survive."
This promotion is for May 24th and 25th. Here is the Amazon purchase link.