Very nice work! I especially liked the black and white one (It Had To Be You). Very good lighting and editing and camera work. I like how the detective moves in and out of the light, especially the shot where we see for the first time that there is someone else up above. I also liked the counter angle insert when the detective turns up. Great editing/camera direction right there.
My only minor nitpick is that the very last shot seems to jump the 180-degree line. I say "seems" because the previous shot (the second-to-last where he turns around) was right on the line and it could have gone either way. But then the hand with the gun that comes into frame from the right (<--) pushes the detective and his gun to the left of it (-->). So in the next shot, which is not a reversal but just a move-in, the detective's gun should still be pointing from left to right (-->), but you switched directions and it therefore jumps a bit.
But maybe I'm overseeing things. I still loved the short. I have a question: Did you storyboard the sequence before shooting or did you figure it out in the theater as you went along?