Spy

A spy was an individual who worked in espionage.

The Doctor and/or his companions were accused of being spies on many occasions, usually because of their lack of identification and appearing seemingly impossibly without anyone having record of them. Among those who made the accusations based on these factors included Odysseus and Cassandra, (TV: The Myth Makers) General Smythe, (TV: The War Games) Brigade Leader Lethbridge-Stewart, (TV: Inferno) Ortron, (TV: The Monster of Peladon) Tuar, (TV: Planet of the Spiders) the Marshal of Atrios, (TV: The Armageddon Factor) and Daisy K. (TV: The Happiness Patrol)

Kalik believed that Vorg was a spy. (TV: Carnival of Monsters)

William Shakespeare worked as a spy for King James I. (PROSE: The Empire of Glass)