I know there's a bunch of these but I had to give this a try.
My little take on what happens after 'Hunt'
SPOILERS for "Target" and "Hunt"

It had been a very long and exhausting day, well more like days, and nobody knew that better than Richard Castle. His daughter had been kidnapped, his father was a spy who he met for a few hours and then the man disappeared once more. Yeah. He was exhausted, but sleep wouldn't come. No. Not with an imagination like his not today, not for a while maybe.

Castle had been staring blankly at the television for about half an hour now and Kate was beginning to get very worried. She knew very well that he was locked somewhere deep in his own dark imagination. Well Kate wouldn't have it. It was time for her comfort him. And hell was she going to. Walking out of the kitchen where she'd been watching Castle silently, she walked over to the couch and sat down next to him. "Castle?" If he heard her he ignored her because he continued to stare at the tv screen. She rested her hand on his arm and rubbed it softly. "Rick? Look at me." She felt him twitch, but he continued to ignore her. "Richard Castle look at me." She growled and shook him by the arm. He sharply turned his gaze towards her. "What?" He breathed, his voice hoarse "Come Castle you need to sleep. It's been a long day." She whispered softly. "I don't want to sleep." Stubborn son of a bitch. "Castle at least lie down for a while." He seemed to ponder this for a few seconds before he sighed. "Beckett how can I sleep? My daughter was kidnapped and my father, who I never knew popped back into my life and just disappeared again." Heaving a deep sigh Kate leaned against him and put her arms around him. "You can sleep knowing everything is alright Castle. You can sleep knowing that you kept your daughter safe." Castle closed his eyes and leaned into her. "If I had been a few hours later, If...If I hadn't gone at all I don't know what could've happened." He whispered. "Castle stop thinking about what could've have happened. Think of what did. You saved her Castle. You did it, you got your baby back." He stared at her, eyes shining with unshed tears. "So stop thinking about what could've happened alright?" Kate smiled in satisfaction when he nodded. "Good now let's go to bed." Tugging on his arm she managed to get him off the couch and into his room, soon enough he was in his boxer and curled up in bed next to her.

After a few minutes he turned to face her and gave her the smallest of smiles. "Kate?" She looked up at him and smiled warmly. "Yes Castle?" "Thank you." He whispered, wrapping his arms around her. Kate paused for a second before smiling again. "Always."

So maybe he wouldn't rest properly for a while. Having Kate by his side made the exhaustion just a bit more worth it.

Not sure where that one came from...It's pretty late and it just popped into my head while watching the episode again. Yes that is my excuse for this crap 8D Hope you liked it. R&R? I'll give you candy from my van c8