George is dismayed because one of the dolls in Susan's collection bears an uncanny resemblance to his mother.
Bernadette tries to decrease the amount of friction in Howard and Sheldon's friendship. Penny's car breaks down and she is afraid she will have to return to The Cheesecake Factory.
Doug is coerced into going to Mumbai to visit his father and meets Priya Sehgal. Together, they fight to uncover the truth behind a false murder confession.
With the identity of the timeline-unraveling “thread” revealed, the team’s mission to protect him at all costs leads each agent to question their own values. Is preserving the future of the world as they know it worth the destruction they could prevent?