第1次：
Season 5, Episode 14: No Man's Land
The robbery of a police truck containing confiscated weapons is connected to a plot to spring Clavo Cruz from prison, and one of the guns stolen in the robbery is used in the shooting of a young bo
Season 5, Episode 15: Man Down
While the manhunt for Clavo Cruz continues, Delko fights for his life after the shooting.
第2次：
Season 7, Episode 25: Seeing Red
Ivan Sarnoff escapes an assassination attempt by the Russian mob, and is on the loose. Evidence also suggests that Delko's father was involved, while Yelina, working undercover, is asked to find Sarnoff and finish the job.
Season 8, Episode 1: Out of Time
As Delko fights for his life once again, he flashes back to 1997 and the case that helped launch his career as a CSI.
請看看是哪次！