'The Big Bang Theory' season 11 episode 9 spoilers: Leonard and friends strike gold with Bitcoin investment

A promotional poster for the CBS sitcom, 'The Big Bang Theory.' Facebook/TheBigBangTheory

In the next episode of the "The Big Bang Theory," it appears that Leonard Hofstadter (Johnny Galecki), Howard Wolowitz (Simon Helberg), and Raj Koothrappali (Kunal Nayyar) may have struck a lot of money with their Bitcoin investment.

The trailer and promotional photos for the upcoming installment titled "The Bitcoin Entanglement" was just released and showed the gang in the comic book store talking about Bitcoin. "I can't believe a single Bitcoin is worth $5000," Wolowitz says to the group. Apparently, the value of this kind of currency has surged dramatically in recent months. "Didn't we mine some a few years ago?" Hofstadter asks as they continue to browse through the comic collection. They all suddenly light up as they determine that they invested in Bitcoins back in 2010. They give one another high-fives but Sheldon Cooper (Jim Parsons) seems to be left out of the celebration.

Hofstadter asks Koothrappali what he is going to do with his money. His Indian friend replies with an excited tone, "Buy a tiger." They are all thrilled about cashing in their Bitcoins for a load of money but it seems that Wolowitz may have forgotten where he deposited the special coins. They are lucky though that Cooper remembered where they placed their coins. However, because the guys left Cooper out of this potential investment, it appears he is going to give them a hard time first before revealing the details.

In the last episode, Cooper accepted an opportunity to work for the military but did not tell Hofstadter and the guys about it. They decided to hire Barry Kripke (John Ross Bowie) to work on their project and not tell Cooper about it to get back at him. They all eventually went back to being on good terms with one another.

"The Big Bang Theory" season 11 episode 9 will air on Thursday, Nov. 30 at 9 p.m. EST on CBS.

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