Ivan Mok

In the 100th episode, Sheldon gets an odd request from an old friend, Paige (guest star McKENNA GRACE). Meanwhile, George and Mary are caught in the middle of Meemaw and Dale’s breakup, and Georgie comes clean to Mandy.

Sheldon makes friends with his dorm neighbors. Meanwhile, George Sr. learns his job is in jeopardy.

As Philip and Elizabeth struggle to contain the risks from Paige's growing relationship with Matthew Beeman, the Centre sends them on an operation unlike any they've ever had before, straining their family and marriage to its limits.

Stan and Oleg wrestle with the harsh consequences of their complicated history, as Philip and Elizabeth face a new mission with devastating implications for their country.

Philip and Elizabeth receive surprising news about Henry -- and shattering news about a past operation. Stan might be falling in love, but Philip wonders if something darker is going on.

Philip and Elizabeth are thrown off balance when things with Tuan take an unexpected turn. Meanwhile, Henry makes a startling proposition and Stan has a disturbing encounter with Frank Gaad’s widow.