"Timothy Smith, you are under arrest for the murder of John Turner," Beckett said as she slapped handcuffs onto the murderer. She handed Timothy over to Espo who started to lead him to the police car as Castle came and stood by Beckett. They stood and watched Timothy and Espo walk away in silence. Suddenly Castle tilted his head to the side and squinted.
"Are those...?"
"Are those what, Castle?" Beckett asked, smiling knowingly.
"Are those the handcuffs that you used last night?" he asked, still studying the handcuffs as they walked away.
"Yes."
"The same ones that you...?"
"Yes."
"That you...?"
"Yes."
Beckett turned around and started to walk away, smiling. Castle turned around and watched her walk away.
"Kinky," he said with a grin. He rushed to catch up with her.