Heartbeat (1992) : 6x13

Nick rescues a young woman from a house fire. She soon becomes obsessed with Nick , phoning him at Jo's calling into the station, calling round at the police house and spending time with Katie. When Nick makes it clear he isn't interested, she first plants her bracelet in his uniform and tells Blaketon he's stolen it. She then causes trouble between Nick and Jo when she tries to convince Jo that he and she are having an affair. This makes Jo feel insecure, but Nick convinces Jo that the woman is just making trouble and tells her that he loves her. The woman sees Nick and Jo out one night and attempts to knock Jo down with her car, but she is stopped in time.