While investigating the murder of a young woman, Castle and Beckett find evidence that links her death with Senator William H. Bracken (Jack Coleman), the man responsible for Beckett's mother's…

Barney uncovers the lost episode of Robin’s “Underneath the Tunes” as Robin Sparkles. Meanwhile, Marshall and Lily are concerned that Ted’s new girlfriend is a stalker.

Sherlock pursues Martin Ennis, an unpredictable criminal, before he strikes again. During the investigation, Sherlock is forced to work alongside Kathryn Drummond, the FBI profiler who literally wrote the book…

A botched museum heist in Harrisburg has unintended consequences, as Lucas, Carrie and Job renew their partnership. After coercing redneck henchman Arno to offer up incriminating evidence, Lucas and Emmett…

Claire fuels an old flame. Peter wrestles with his demons. Francis crosses the point of no return.

Zoe extends her time away from The Hill while Francis tracks down Russo and engages in damage control.

The President sends Frank to St. Louis to persuade Raymond Tusk into becoming the new Vice President. Zoe and Janine investigate Peter Russo's death.

Frank scrambles to keep his plan on track. Gillian is planning to sue Claire. Zoe, Janine, and Lucas investigate Rachel Posner and her relationship with Peter Russo.

When the newly elected President reneges on a promise, Francis and Claire decide to sever all allegiances and toss the rules out the window.

Francis and Doug plan to frame Secretary of State nominee, Michael Kern. Meanwhile, Zoe's popularity at the Washington Herald continues to grow.