The Silence Between Heartbeats (en Inglés) - Isabella Hart

She hears the silence before the heartbeat stops. He's been dead three years - but his heart still beats inside her chest. Dr. Harper Lee is Boston's finest transplant cardiologist, haunted by dreams of a cellist she's never met. Leo Magnusson died at twenty-nine, his heart donated to a stranger. Now he's inexplicably alive, with no heartbeat - and one certainty: the woman carrying his heart is in danger. When they find each other in a Boston alley, her heart steadies the moment he touches her. A love story that transcends death, time, and everything science can explain - about the heartbeat that lives in the silence between.