Emily’s demand for the FBI to go after Nick is met with resistance, which leads her to set in motion a risky plan that puts her face-to-face with the one man who can lead her to Nick. Meanwhile somewhere in Europe, Nick is being drugged and psychologically tortured, revealing his buried guilt and his insecurities as an FBI agent, a husband, and as a father.

Nick continues to be tortured but finds an opportunity to try to escape from his captors. Cal and Emily head off to rescue Nick and become closer along the way. When they reach the mysterious location, they find evidence that links to Nick’s case back in Boston, but there’s no sign of Nick.

Emily and Nick are finally reunited with Flynn back in Boston, but the threat of Elliot’s bioweapon still looms large. Emily resorts to drastic measures and make a dangerous choice to ensure her family’s safety.