6x4 - A Touch of Frost

Frost is called upon by Supt Mullett to investigate the theft of his friend's car from their golf club by a confidence trickster, who leaves behind a trail of satisfied golfing widows, unpaid bar bills and stolen cars. It gets complicated when the car is recovered with the body of a local drugs dealer in the boot. What are the connections between the car owner, the con-man and the dead drug dealer?