Season 12 - Episode 11 - Ms. Willows Regrets 

When Willows works with the FBI again after a professional hit occurs at a law firm she recommended to her friend, the CSI - Scena del crimine team identifies shocking similarities at the crime scene.
parole chiavi: CSI - Scena del crimine las vegas, season12, episode 11, ms. willows regrets, full episode, cbs