Eighteen-year-old Cayenne barely remembers her mother, who died of breast cancer when Cayenne was four. The women in her family have a history of dying young. Cayenne figures she'll meet the same fate, so she might as well enjoy life now, engaging in death-defying risks like dodging trains and jumping off cliffs with her boyfriend.When Cayenne receives a series of video messages her mother made for her before dying, she isn't sure she wants them. Her aunt Tee has been her true mother figure. But then Aunt Tee tests positive for a BRCA gene mutation—the one that doomed Cayenne's mom—and decides to get a mastectomy to reduce her chances of developing cancer. As Cayenne helps her aunt prepare for the surgery, she finds herself drawn to her mother's messages, with their musings on life, love, and perseverance. For the first time, Cayenne starts to question what it truly means to live life to the fullest, even when death might be written into her DNA.

Gabriella Mallory, AP student and perfect-daughter-in-training, stands barefoot on a public toilet for three hours while her school is on lockdown. Someone has planted a bomb and she is hiding. The bomb is defused but the would-be-bomber is still at large—and everyone at Central High School is a suspect. The school starts a top-secret crisis help line and Gabi is invited to join. When she does, she is drawn into a suspenseful game of cat and mouse with the bomber, who has unfinished business. He leaves threatening notes on campus. He makes threatening calls to the help line. And then he begins targeting Gabi directly. Is it because her father is the lead police detective on the case? Is the bomber one of her new friends? Could it be her new boyfriend with his complicated past? As the story unfolds, Gabi knows she is somehow connected to the bomber. Even worse, she knows she is part of his plan. Can Gabi reach out and stop him or will she be too late?

Rose is the wild girl nobody really knows. Chase is haunted by his past. Both are self-proclaimed "disappointments," attracted to each other enough to let down their defenses. When Rose's strict, adoptive parents forbid the relationship, it only makes things more intense. But Chase can't hide from his own personal demons, and Rose has secrets of her own. After they're wrenched apart, a cryptic email arrives in the middle of the night on Christmas Eve, beginning a desperate pursuit and a look back over their tumultuous romance. Will they find each other before the night is over, or will they be torn apart forever?