A new clip has been released from this week’s episode of The Big Bang Theory, showing Raj and Howard confronting Sheldon’s peculiar work-quirk.

Spoiler TV has shared a clip from “The 43 Peculiarity,” which will air this Thursday at 8 p.m. Check out the sneak peak right here!

It’s a good thing “The 43 Peculiarity” airs tomorrow, because we can’t wait to find the truth lurking behind Sheldon’s ritual 2:45 disappearance. Is Sheldon taking a siesta? Videoconferencing with Stephen Hawking? Has he discovered the serum that will turn him into a mad scientist/supervillain at last? We’re stumped! (And we kind of want to see that bunny.)

Also to come in “The 43 Peculiarity” are potential roadblocks in Leonard and Penny’s romance. Sheldon’s assistant Alex (Margo Harshman) will return, perhaps to continue establishing her interest in Leonard; meanwhile, Penny is set to feel a few sparks with a new classmate named Cole (Ryan Cartwright). With the pair’s history of see-sawing, having Leonard and Penny experience a simultaneous distraction certainly seems peculiar… and potentially perilous for the popular relationship.

Be sure to check out the promo and these new stills from “The 43 Peculiarity.” CBS’s official summary says:

Howard and Raj try to get to the bottom of why Sheldon disappears every afternoon at 2:45. Meanwhile, Leonard and Penny deal with jealousy in their relationship.

Where do you think Sheldon goes at 2:45?