In the next episode of the "The Big Bang Theory," Penny Hofstadter (Kaley Cuoco) stumbles upon a book that can be used to manipulate Sheldon Cooper's (Jim Parsons) thoughts and emotions.

The trailer for the upcoming installment titled "The Collaboration Contamination" was just released and showed Penny holding a strange book and telling her husband Leonard (Johnny Galecki), "It's like the answer key to the Sheldon test." The book seemingly has important information about what Cooper likes and how he thinks. Penny may have struck gold as she can use this book to her advantage and try to control the annoying and outspoken Cooper. Leonard cannot seem to believe her good luck as he tells her, "What did you do? Are you a witch?"

Apparently, with Penny's new-found knowledge, she is now able to stop Cooper from being annoying to anyone. In one scene, Cooper tells his fiancée Amy Fowler (Mayim Bialik), "You need to sit down and let me pamper you." Instead of getting on Fowler's nerves, Cooper seems to be doing the opposite and getting on her good side. It remains to be seen though how long Penny's good luck will last and if Cooper will be able to uncover her secret.

In the last episode, Penny and Leonard's mom, Beverly (Christine Baranski), started to forge a friendship which made Leonard resentful. He always felt distant from his mom because she did not give him enough attention as a child.

Apparently, he wanted to get back at his mom by marrying the person she disliked. However, with Penny and Beverly having a good relationship, this bothered Leonard very much. In the end, Leonard and his mom were able to reconcile and move on from there.

"The Big Bang Theory" season 11 episode 5 will air on Monday, Oct. 23 at 8 p.m. EDT on CBS.