• title card: white all caps text reading ‘THE BIG THINKER’ superimposed on a croner of the lab, showing a maniframe computer rack and cooling pipe
  • Dr. Kearns plays cards, unaware that his mathematical ability will not help him in a rigged game
  • Dr. Clemens is found dead in one of the ducts, Dr. Kearns peers in from the far end
  • Cathy and Steed hold Broster and Clarissa at gunpoint after disarming them
  • Farrow sees his own name on the printout identifying the killer
  • Steed’s bag is packed for a mission in Tel Aviv and tagged with his Carruthers alias

Series 2 — Episode 12
The Big Thinker

Teleplay by Martin Woodhouse
Directed by Kim Mills

Read the script (PDF 6.2MB)

Production No 3514, VTR/ABC/2217
Production completed: December 13 1962. First transmission: December 15 1962.