The Time Snatch (short story)

Summary
UNIT, along with The Doctor and Sarah Jane, travel to the American desert in search of Crystal Z. The Doctor discovers the crystal could cause a lot of trouble for the Earth and must find it before the trouble begins.

Characters

 * Fourth Doctor
 * Sarah Jane Smith
 * Dr. Bhoul
 * FProspector
 * Alien Intelligence
 * Caveman

Continuity
to be added