If I Had a Hammer - Season 9 - Episode 21(wisevid) 

When a murderer claims that the सी एस आइ team used faulty evidence when the verdict was reached, Catherine re-investigates the case, which happens to be one of her very first cases as a CSI.
कीवर्ड्स: season 9, full episode, episode 21, सी एस आइ las vegas, if i had a hammer