Check out some preview and behind-the scenes clips from The Americans, which airs tonight only on FX.

“The Walk In” — Philip and Elizabeth complete their next mission – but not without complications – and Philip’s fears about Elizabeth’s readiness for action deepen. Stan tracks the KGB walk in which leads to much praise at work and a deepening of his attachment to, and dependence on, Nina. Meanwhile, Paige snoops into her mother’s family background and Oleg begins to scrutinize Nina’s secret operation.

Oleg Character Profile — Who exactly is Oleg Igorevich? Go Inside The Secrets to learn about the ambitions of the KGB’s mysterious, new officer.

The Americans: Exclusive Scene from Episode 3 — Has their duty to country and family finally reached a crossroads?