Muriel Frost

Frost was a US Army Major and a member of the Unified Intelligence Taskforce, serving the latter as one of its foremost experts on alien incursions.

She was brought in along with many other experts when a craft of distinctly alien origin crashed into the Big Ben clock tower in London. Meeting at 10 Downing Street, the experts were joined by the Ninth Doctor, Acting Prime Minister Joseph Green and British Army General Asquith. Sitting next to US Army General Schwartz, Major Frost was intrigued by the Doctor's revelation that the crash and the pilot found inside had been faked in order to draw the experts into one place and eliminate them. The true aliens, members of the Slitheen family, were actually in the room disguised in the bodies of Asquith and Green, the former of whom unmasked himself, to the horror of the experts. Green then took out a small device and thanked the experts for wearing their ID cards before sending jolts of deadly electricity coursing through the assembly. Though the Doctor managed to free himself and summon help, Major Frost and the others died before any aid could be given. They were avenged when the Doctor and his allies blew up 10 Downing Street to stop the aliens, killing all but one. (TV: Aliens of London / World War Three)