When a couple is disturbed by the loud noise of a wood chipper at 08:00 in the morning, the man in the relationship takes a video camera down to the street to record his complaints about the noise. However, when blood comes shooting out of the chipper, the man becomes the witness of a murder. He tells the CSI’s that the gardener was the person who fell into the machine, but when the gardener walks into the crime scene just seconds later, the team realizes that they are dealing with an unknown individual. Meanwhile, Horatio faces off against an old enemy whom he thought was dead, Ron Saris, and apparently, he has put Julia’s life in jeopardy.