Aired Monday June 17, 1:00pm - 1:30pmon E4

The Big Bang Theory

Series 3 Episode 22: The Staircase Implementation

This episode flashes back to the start of Sheldon and Leonard friendship seven years previously and explains the housemate agreement and how Sheldon saved the lives of his friends.

Original air date
Cast and crew
  • Mark CendrowskiDirector
  • Johnny GaleckiLeonard
  • Jim ParsonsSheldon
  • Kaley CuocoPenny
  • Simon HelbergWolowitz
  • Kunal NayyarKoothrappali
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