Best-selling author Riley Sager shares his six favorite books

Author Riley Sager shares his favorite books. Michael Livio; Amazon Ever wonder what your favorite celebrities are reading — whether it’s a timeless classic or the buzzy bestseller they can’t put down? Welcome to Page-Turners, where stars reveal the books that keep them hooked, inspired and up all night. Warning: your TBR pile is about to get a lot longer. Despite writing thrillers that keep readers on the edge of their seat, Riley Sager has to be horizontal while taking in his favorite reads. “I can no longer read books sitting up,” the author — whose new book “The Unknown” is out now — told Page Six. “How long this has been going on, I have no idea. But it’s been a while. Years. Maybe even a decade.” Sager explained if he’s reading a physical book, he has to be in his bed or on the couch