Heartbeat (1992)

A market traders van is hijacked and stolen on the moors. Nick starts to investigate and suspects Lord Ashfordly's son, who he later arrests for drink driving. Kate unintentionally starts a chicken pox epidemic when she starts a mother and baby group. Nick spots Claude wearing a brand new pair of boots several sizes too small which turns out to be part of market traders stolen stock. However, he doesn't think Claude is involved, but Blaketon disagrees. A local girl is pregnant and confides in Kate as to whom the father is. Nick later identifies the hijacker as Lord Ashfordly's new chauffeur, who also turns out to be the father of the local girl's baby.