David and his mum are mid-murder when an unexpected visitor throws them into panic. Who is the mystery caller? What will happen to the body in the trunk? And will Maureen finally get to try one of those pyramid teabags?

Robert uses Debbie's amnesia for his own ends. A battle of wills ensues with more than cross words flying through the air. Mr Jelly is entertaining an old people's home when a phone call from Mr Jolly plunges him back into danger. Maureen learns the truth about her killing spree. Mr Lomax has acquired a new home help.