The Ashfordly team has two unlikely new recruits in the shape of two young boys dressed as Batman and Robin, who have spotted criminal activity on a derelict farm, whilst Mike is busy pursuing a criminal gang who have flooded Aidensfield and neighbouring villages with counterfeit money. Meanwhile, Liz faces an unsettling reunion with a former patient with a very personal vendetta when she begins receiving disturbing late night phone-calls. Elsewhere, Vernon is delighted when he inherits his late aunt Aggie's house.