“How did Cas even get the Colt out of the safe in the first place?”
“Dean, you put the Colt back in the safe right?”
“It was under my pillow”
1. How did Cas know to look under Dean’s pillow?”
2. At what point in that prior scene where Cas appears to have spent 3 seconds hovering in the doorway to Dean’s bedroom only could he have got the Colt from under Dean’s pillow? Hmm?
3. Why was Dean so shifty about it when admitting to Sam that was where Cas had taken it from?
Do you want me to answer these questions? Or shall I leave it up to your good selves to put two and two together just like Sam probably did hence Dean acting all shifty in the first place?
Here’s a hint:
Cas spent far longer in Dean’s bedroom than just the clip we were shown.
Cas spent considerable amounts of time in Dean’s bedroom in the general vicinity of his bed and pillow.
Cas was able to ‘distract’ Dean long enough to swipe the Colt away from underneath his pillow.
Hmmm… Do I really need to spell it out any further? :P