Heartbeat is a British period drama television series which was first broadcast on ITV between 10 April 1992 and 12 September 2010.
Set in the fictional town of Ashfordly and the village of Aidensfield in the North Riding of Yorkshire during the 1960s, the programme is based on the "Constable" series of novels written by ex-policeman Peter N. Walker, under the pseudonym Nicholas Rhea.
Greengrass has left Aidensfield (off-screen) to be with his sister in the Caribbean, leaving behind his property, truck and Alfred in David's hands.
David soon finds himself with financial problems, until Bernie's half-brother, Vernon Scripps, arrives after a 15-year absence and offers his assistance.
Meanwhile, Jackie finds out that Mike is providing a safe house for a mentally ill witness, who is wanted dead by men seeking to stop him making an appearance in court.