What a trip!

On Monday's new episode of Castle, "Murder, He Wrote," Kate and Beckett plan a getaway to the Hamptons. In secret, of course. Sort of, that is.

In the first clip below from the installment, the secret of Beckett's trip with her boyfriend is out. Who is this guy? Is he a bad ass? Ryan and Espo decide they simply have to find out:

Castle Clip: A Boyfriend?!?

Alexis and Martha are already in on the relationship, of course... much to the chagrin of Castle in this sneak peek, as they pepper him with questions and advice:

Finally, the pair arrives at its destination. There are stars in the air. There's a heated pool awaiting a late-night dip. There's a very naked Kate Beckett - and there's a dying man in their backyard:

Castle Clip: "Murder, He Wrote"

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.