Whatever bad blood might exist after Delko takes down the responsible party — and Houghton is confident the audience will be surprised — the team will have to find a way to forgive him. In the season finale (Monday, May 24 at 10/9c), a serial killer taunts the team with clues to his victims, and ultimately, Delko is one of the few who will be able to save the CSI team.
"This killer is out for blood, and all the CSIs end up in jeopardy, except for Horatio and Delko," Houghton says. "The killer has very sneaky ways of getting to people — he doesn't even have to be there. He sets things up ahead of time, and it's a ticking clock for the CSIs to stop him. What they don't know is that he set up one of these ticking clocks in their lab."
