Series 1 - The Lost Boy

WRITTEN BY: Phil Ford

ENEMY: Xylok (Mr Smith), Slitheen

SYNOPSIS:

A missing child turns out to be, both visually and genetically, Luke Smith. Sarah Jane is forced to hand him over to his 'parents', only to find that they are not what they seem. They are, in fact, Slitheen who are doing what something called a Xylok tells them...