Undercover (comic story)

 is the invented title of the second of two Third Doctor comic stories in the TV Comic Holiday Special 1970. Like many pre-Marvel comic strips, it had no title on initial publication. The name gained traction after being used by Jean-Marc Lofficier in The Terrestrial Index and later by John Ainsworth in his then-comprehensive listing of Third Doctor strips in DWCC #4.

Summary
When a "small device" is stolen from UNIT by foreign agents, the Doctor dresses as an old lady and uses his obedience spray to get it back.

Characters

 * Third Doctor
 * Alistair Gordon Lethbridge-Stewart
 * Foreign agents

Continuity

 * The Doctor disguises himself as a woman. (TV: The Green Death)