CBS network's hit sitcom The Big Bang Theory is coming up with Episode 5 on October 13 and here are some spoiler alert that fans would like to know before it airs. The episode is entitled The Focus Attenuation.

The last episode, which they named as The Hook-up Reverberation, made good ratings that fans couldn't help but be excited on what's in store on the next episodes of this season.

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But to give you just a quick recap of episode 4, it is when Raj finally introduced Emily to the group as his girlfriend. On the other hand, Emily (Laura Spencer) is upset with Penny (Kelley Cuoco) because Raj told her that two of them hooked-up. They tried mending their differences but at the end of the show they still didn't like each other.

As for the new episode, the network just released a promo video and on it you will see the four main characters Sheldon (Jim Parsons), Leonard (Johnny Galecki), Howard, (Simon Helberg) and Raj (Kunnal Nayyar) will be working on a new invention.

They will be a bit distracted but it looks like they are very determined to make it happen. It is going to be hilarious with all the distraction and procrastination that will totally hinder them from finishing it. The teaser shows them watching an online ping-pong match that is ruining their plan to succeed with their invention.

Another spoiler for this episode involves Amy (Mayim Bialik) and Bernadette (Melissa Rauch) calling Penny a buzz kill because she would rather work than go on a trip to Vegas with them on a weekend.

Looks like the tables have turned as to who is being more fun among their group. Mark Cendrowski directed this one and it is also penned by Jim Reynolds, Maria Ferrari along with Adam Faberman.

Don't forget to watch the 5^th episode of The Big Bang Theory on October 13, Monday night at 7 PM via CBS.

TagsThe Big Bang Theory, TBBT, the big bang theory season 8 episode 5