Cassandra Marlow has spent years helping strangers through the worst days of their lives. As a trauma nurse in Denver, she has learned to keep her distance, protect her heart, and leave the pain of her patients behind when her shift ends. Then John McKinnon arrives. A devastating accident leaves him fighting to recover from more than physical injuries. As the days pass, a series of quiet conversations grows into an unexpected connection neither of them saw coming. But healing is rarely simple, and the road forward is filled with difficult choices, old wounds, and the risk of opening their hearts to something neither believed they would find again. Set against the backdrop of Denver and the mountains beyond, Between Heartbeats is a deeply emotional story about second chances, family, forgiveness, and discovering that sometimes the people who change our lives arrive when we least expect them. Because between one heartbeat and the next, everything can change.