Crossland

Crossland was a Detective Inspector assigned to investigate the disappearance of Inspector Gascoigne. He helped the Second Doctor investigate Chameleon Tours after learning of the two cases' connections, but was abducted to the Chameleons' space station and his identity taken over by the Chameleons' Director. When the Doctor defeated the Chameleons, the Director was angered by the false Blade's willingness to negotiate with the humans, and when he attacked him in an attempt to regain control, the false Blade was forced to shoot and kill him. The real Crossland was subsequently freed and returned to Earth.

_{Biography from the TARDIS Data Core article, licensed under CC-BY-SA}