Jonathan Kerrigan played Sergeant Robert "Rob" Walker on the British television drama series Heartbeat from 2004 until 2007. In the show, his character had come from a family of crime and was predominantly why he chose to become a police officer. Throughout his time on the show, Jonathans role as Rob was at the center of plenty of drama and heartache. His father had committed robbery, and his mother died. Later in the show, he began a relationship with Dr. Helen Trent, and the pair tied the knot during the series, only for her to die in an explosion at the Police House. Rob then began a relationship with Aidensfield nurse, Carol Cassidy, however, the relationship wasnt to last, and Rob eventually moved away. In the final episode of Series 16, Rob rode off into the sunset, and he was succeeded in Aidensfield by PC Joe Mason. In a later series, Rob returned to Aidensfield after the death of his wife Helen.