All the Dangerous Things by Stacy Willingham

Following up her instant New York Times bestseller, A Flicker in the Dark, Stacy Willingham delivers a totally gripping thriller about a desperate mother with a troubled past in All the Dangerous Things.
One year ago, Isabelle Drake's life changed forever: her toddler son, Mason, was taken out of his crib in the middle of the night while she and her husband were asleep in the next room. With little evidence and few leads for the police to chase, the case quickly went cold. However, Isabelle cannot rest until Mason is returned to her—literally.
Except for the occasional catnap or small blackout where she loses track of time, she hasn't slept in a year.
Isabelle's entire existence now revolves around finding him, but she knows she can't go on this way forever. In hopes of jarring loose a new witness or buried clue, she agrees to be interviewed by a true-crime podcaster—but his interest in Isabelle's past makes her nervous. His...