Sheldon is confronted by a mystery of the universe he cannot unravel: when a woman wants time apart to think, exactly how much time does that mean, and is there any way to hurry the process along? In Las Vegas, Penny and Leonard march closer to marching down the aisle, but has Penny gotten over Leonard’s infidelity? And if so, will he do anything to un-get her over it?
Elenco: Jim Parsons , Johnny Galecki , Kaley Cuoco , Simon Helberg , Kunal Nayyar , Mayim Bialik , Melissa Rauch , Kevin Sussman , Aarti Mann , Kevin Sussman , Sara Gilbert .