In downtown Chicago, a young woman named Esther Vaughan disappears from her apartment without a trace. A haunting letter addressed to My Dearest is found among her possessions, leaving her friend and roommate, Quinn Collins, to wonder where Esther is and whether or not she's the person Quinn thought she knew. Meanwhile, in a small Michigan harbor town an hour outside Chicago, a mysterious woman appears in the quiet coffee shop where 18-year-old Alex Gallo works as a dishwasher. He is immediately drawn to her charm and beauty, but what starts as an innocent crush quickly spirals into something far more dark and sinister than he ever expected.

Despite the tumor-shrinking medical miracle that has bought her a few years, Hazel is still terminal. But when a gorgeous plot twist named Augustus Waters suddenly appears at Cancer Kid Support Group, Hazel’s story is about to be completely rewritten.