sentences:  In the penultimate episode of the first series, "The Lost Boy", Mr Smith "readopts" his "evil" persona when he reveals to Clyde that he is a Xylok and that he had manipulated the Slitheen into kidnapping Sarah Jane's adoptive son, Luke.In doing so, he plans to bring the Moon crashing into the Earth by using Luke – subsequent to his impending "arranged" escape by Mr Smith – in conjunction with a telekinetic energiser headset, codenamed MITRE (derived from the Greek "mitre"), which is tuned to a human's natural telekinetic power, thereby enabling the user to move things with their mind.The gravitational pull of the Moon would tear the Earth apart, thereby freeing the Xylok race.