Aired Tuesday December 5, 5:30pm - 6:00pmon E4

The Big Bang Theory

Series 12 Episode 6: The Imitation Perturbation

When Howard dresses up as Sheldon for Halloween, Sheldon is determined to get revenge. Leonard is shocked that Penny cannot recall their first kiss.

Category
Holiday / Sitcom
Original air date
2018-10-25
Cast and crew
  • Mark CendrowskiDirector
  • Johnny GaleckiLeonard Hofstadter
  • Jim ParsonsSheldon Cooper
  • Kaley CuocoPenny
  • Simon HelbergHoward Wolowitz
  • Kunal NayyarRaj Koothrappali
+ Show all cast and crew