New information on episode 8 of season 9 of CBS' hit sitcom, The Big Bang Theory, has indeed come out, and it will feature the likes of Sheldon (Jim Parsons) attempting to punish Leonard (Johnny Galecki) for a mistake he made in the past.

The following press release was issued on the respective episode, which is titled, The Itchy Brain Simulation.

"Sheldon is going to punish Leonard for a past mistake by making him walk a mile in his shoes."

A second press release was also put out and read:

"Leonard will try to keep Sheldon from overreacting when a past mistake comes to light, but Sheldon will punish Leonard by making him walk a mile in his shoes."

Also set to take place ie Penny (Kaley Cuoco) confronting the ex-girlfriend of Raj (Kunal Nayyar), Lucy (Kate Micucci).

Micucci aside, another guest star that's set to make an appearance on the episode is Morgan Hewitt, who will don the role of Lizzy.

Next up for CBS' The Big Bang Theory will be The Proton Displacement, which will air on Thursday, Nov. 7 at 8/7 p.m. Central Standard Time. Keep checking back for more of the latest info on the TV show.