Through its doors came the weak and the weary, the disabled and the discarded, the frail and the forgotten. But an open door is an invitation, and some visitors, once invited, are loath to leave. The hospital abruptly closed in 1958 under a cloud of mystery. It has remained empty and silent, save for the memories trapped both within its walls and far below the surface of the nearby lake that bears its name. At the bottom of Asylum Lake, the unremembered are growing restless. Brady Tanner is trying to outrun memories of his own. After the sudden death of his wife, Brady retreats to the small town where he spent the summers of his youth. But he soon learns small towns can be stained by memories... and secrets, too. As Brady is drawn into unearthing these secrets, as he discovers a new love in an old friend, he is also drawn into the mystery of Asylum Lake and the evil that lies submerged beneath its sparkling surface. What is the source of this evil - and what does it want with Brady Tanner?

    I didn’t want to leave you... Luke Richardson has returned home after burying Natalie, his beloved wife of sixteen years, ready to face the hard job of raising their three children alone. But there’s something he’s not prepared for—a blue envelope with his name scrawled across the front in Natalie’s handwriting, waiting for him on the floor of their suburban Michigan home.The letter inside, written on the first day of Natalie’s cancer treatment a year ago, turns out to be the first of many. Luke is convinced they’re genuine, but who is delivering them? As his obsession with the letters grows, Luke uncovers long-buried secrets that make him question everything he knew about his wife and their family. But the revelations also point the way toward a future where love goes on—in written words, in memories, and in the promises it’s never too late to keep.