A/N: Just some nonsense that came into my head the other day. I kind of see it taking place during "One Man's Treasure," but it's kind of AU. Hope you like!
Disclaimer: I own nothing.
Name Calling
"All ready to go, Sweetie?" Castle asked as his daughter drifted over to where he was sitting with Beckett. At her nod he rose to leave, wishing the detective a good night as he collected his coat.
"Good night Kate," Alexis said with a smile as the two Castles started towards the lift.
Beckett had barely returned the sentiment before Castle had stopped and spun around on his heel to face her.
"She can call you Kate and I can't?" he demanded gesturing towards his daughter, his expression a mixture of bewilderment, disbelief and exaggerated mock hurt.
Beckett bit back a smirk, "You never asked," she replied with a hint of mischief in her dark eyes that went completely unnoticed by Castle.
Castle turned around to look at her fully and schooled his features into his best supplicant expression, "Detective Beckett, may I call you Kate?" he asked, a touch of hopefulness in his tone.
"No," Beckett replied flatly, a hint of a smile playing about her lips as she took in his shocked expression. Behind him Alexis was trying to contain her own amusement.
"Wha-? Why not?" he demanded, taking a step towards her.
"Come on Dad," Alexis said, taking hold of his arm and pulling him away.
"You haven't heard the last of this," Castle warned as he allowed himself to be pulled towards the lift.
"I'm sure I haven't," Beckett deadpanned back.
Detective Beckett was a patient woman, but she didn't have long to wait before the message came on her phone: What if I said 'please'?