CSI: Crime Scene Investigation cheats and cheat codes for XBox

Find the hidden hair in "In and Out" case: 
Go to the cloth on the bed next to the dead body. First use the 
magnifier, then use the tweezers to pick up the secret evidence.

Find a thread from a sweater in Garvey case:
Use the magnifier to examine the iron rod. Move all the way down the rod 
with the magnifier to find a thread from a sweater.

Get help from partner:
If you stucked in the game, you can ask a hint from your partner anytime.

Light My Fire case
When you look outside, you will find a knee print. Cast it.
Above the knee print, you should find some small pieces of 
glass. Collect the pieces.