Room for improvement, but not in a bad way.
This was a nice game...
I know these mystery things can get kinda tough to write (i realized this quickly trying to work on a thought intensive project myself)
It's a shame some of the other characters weren't involved. Also, the show usually runs two cases at a time, and i know Grissom was working a factory case, but there wasn't much to it, little activity from Grissom's perspective, and there was actually little evidence to collect from that scene.
I already said that these kinda things can be tough to write without being some pro at it, but there should've been a big plot twist that leads one of the cases in a completely different direction, which seems to happen a lot in the show (despite that the characters are all supposed to be professionals, yet not a one could see whatever case going in that direction, but now i'm just ranting about the show...)
Also, it was short and there wasn't too much evidence to collect, but this is really what should be expected from real life cases (a pretty open-shut case without too much difficulty. They say that it's more likely that you'd be killed by someone you know than a complete stranger, and revenge seems to be a popular motive these days...)
I did like it as a whole, though, and i did have a little difficulty zooming back out on the crime scene when i went to swab the bloodstain. It took me a few seconds to figure out the green arrow bit...
Three final notes: 1) There should be more evidence to collect at the specific parts of the crime scene, like a few extra things in the trashcan or whatever, so the novice player might easily overlook it. On that note, you should also try to plant a few red herrings to keep the brain juices flowing, and try to mislead the player in the wrong direction (and maybe getting a game over if they get it wrong)
2) Instead of just the buttons for the evidence collection tools, when you click on them, you should change the mouse cursor to represent that item, so the player has to click on a specific item on the screen, unlike the system you have now, where clicking away just lets you nab it. (There could also be a procedure to collecting the evidence, so if you're in a hurry and you mess something up, you compromise it, and can't use it)
3) You must be a fan, but I suggest doing some research too. There are plenty of books out there about forensic science (I've read a few, as this show wanted me to become a forensic investigator, but i decided against that path... but enough about me...) One of my favorite books is "Dead Reckoning" by Dr. Micheal Baden, it's a pretty interesting and fun read if you're really into this stuff... but you prolly know a lot if you've been watching the show for a long time...
Anyway, good luck on future projects, and i hope you make another CSI/Forensic game soon! I'll be looking for it!!!
(and i apologize for the ranting...)