Heartbeat: Precious Stones

SINOPSE

Colonel and Joan Maltravers host a dinner party to celebrate their son's return from Kenya but the meal is disrupted by an armed robbery. David gives chase to the thief and becomes a local hero - much to the exasperation of Bernie. Liz has a difficult decision to make after receiving an exciting offer from Ben. Guest starring Simon Williams, his wife Lucy Fleming and their son Tam Williams.