Castle, Season 5

[Castle is talking to Beckett about the investigation of a murder at a sci-fi convention, and they are at that convention]

Castle:
She was betrayed by someone she trusted. Maybe that was Captain Max--

[Suddenly sees Alexis and two friends just walked by in very skimpy but futuristic outfits]

Castle:
OH MY GOD! ALEXIS???

Alexis:
[shocked to see him as well] Dad? What are you doing here?

Castle:
What are you doing here...dressed like that?

Alexis:
We're Havakura...it's a tribe of female assassins who--

Castle:
--don't wear clothes??

Alexis:
You're overreacting...and you're embarrassing me.

Castle:
I'm embarrassing you? I'm the one who's dressed! [Takes off his jacket, grabs Alexis and tries to put it on her]

Alexis:
Dad!

[Beckett grabs his arm and pulls him away; Alexis and her friends leave]

Beckett:
Castle, come on. Let's go.

Castle:
Are you kidding me? Do you see what she's wearing?

Beckett:
Yeah. It's not that bad!

Castle:
"Not that bad"? How am I going to un-see that?

Beckett:
I've worn worse.