'Castle' Photo Preview: "Murder, He Wrote"

Last week on “Castle,” Martha (Susan Sullivan) clued her son into the fact that she knew about his secret relationship with Beckett (Stana Katic) and encouraged him to tell Alexis (Molly Quinn) the truth as well. This week, Castle (Nathan Fillion) and Beckett decide to spend a romantic weekend in the Hamptons. What could go wrong?

It turns out, plenty. In a new episode called, “Murder, He Wrote,” Martha and Alexis tell Castle that he needs more of a plan than just a romantic weekend. They suggest romantic dinners and walks on the beach under the stars because Beckett deserves something classy. As Castle considers their ideas, he heads to the station only to find Ryan (Seamus Dever) and Esposito (Jon Huertas) grilling Beckett about her mystery man. Castle joins in so he doesn’t blow their cover and once Castle and Beckett leave (separately), Ryan and Esposito decide to get to the bottom of things.

Of course this wouldn’t be “Castle” without a murder mystery. This week, the victim is found in Castle’s Hamptons’ backyard. He and Beckett butt heads with the local police chief so Castle calls Ryan and Esposito for backup. The two are with Laney, trying to figure out who Beckett’s mystery boyfriend is. Laney wants no part of it and Beckett is not amused when she hears the conversation over speakerphone. Ryan and Esposito want one week each with Castle’s Ferrari in exchange for their help.

Will they solve the crime? Probably, but more importantly, will the detectives figure out that Beckett’s secret boyfriend is Castle? Check out the photos below for a sneak peek at the new episode.

“Castle” airs Mondays at 10:00 p.m. EST on ABC.