Sneak Peek of Castle Season 5, Episode 10, “Significant Others”: Rick Has a Confrontation with [SPOILER] About Kate! (VIDEO)

Castle and Beckett have been secretive about their relationship, but when someone new finds out, things take surprising turn. After a casual confrontation, the conversation ends in tears! Original Air Date: Castle Season 5, Episode 10: “Significant Others” airs on Monday, Jan. 7, 2013 at 10 p.m. ET on ABC.

Molly Quinn to Live Tweet Castle Season 5, Episode 10: "Significant Others"

ABC's Castle returns to our small screens in just a few short days, starting with "Significant Others" on January 7. And if that's not enough to cure your holiday blues, we've also learned that Molly Quinn, who plays brainy college co-ed Alexis Castle, will be live-tweeting throughout the episode!   "Yes, ABC has asked me to live tweet during 1/7 airing of Significant Others," Molly told a fan on Twitter. We haven't seen much of Alexis lately — which may have something to do with...

Spoiler Photos From Castle Season 5, Episode 10, "Significant Others": Three’s a Crowd (PHOTOS)

When a powerful divorce attorney who only represented women is murdered, Castle and Beckett are confronted with a plethora of angry ex-husbands, any one of whom could be the murderer. And back at home, Rick has an ex problem, too, as both his ex-wife, Meredith (returning guest star, Scandal’s Darby Stanchfield) and Beckett move into his loft temporarily — at the same time! Two’s company, three’s a crowd ... Original Air Date: Castle Season 5, Episode 10:...