First broadcast 23rd February 1978.

Rachel meets her supposed stepmother - in reality, another member of a terrorist group with plans for the upcoming Royal Garden Party at the palace.

Della Low ... Rachel
Stephen Greif ... Juan
Eiko Nakamura ... Aiyako
Struan Rodger ... Hassel
David Cook ... Wormald
Gwyneth Powell ... Woman Police Constable
George Waring ... Police Sergeant
Neville Jason ... Peter