OK, you're at the lovely Desert demonstration gardens. There's a Greenskeeper to chat with! He says he saw a woman like her in this area. Time to get exploring.

door - locked (VERY FRUSTRATING) :) :)
ground on right - use dust tool on treads
rock on left - tweeze the dust
look at grass - it's flat, but you can't touch it.

The trash can is really annoying. What you have to do is magnify the center of the tissue paper. Then you tweeze the hair, then glove-grab the paper. Why can't you just take the whole bin back?? Do you innately know the rest aren't clues?

Head back to the lab!

CSI Crime scene Investigation Walkthrough