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.