A killer from the past returns, this time with equally deadly results. Now, the CSIs must race against the clock to find the killer before he strikes again. Meanwhile, Grissom begins to stress out when he starts to think that the killer is outsmarting him.
Episode number: 5x6 Airdate: Thursday November 04th, 2004
Catherine: What's with the tape? Greg: The evidence wasn't cooperating so I stuck it to them. Catherine: Cute.
Catherine: Ah.. sorry Sara, I need the microscope. Priority. Sara: I have 3 more samples to run then I'm finished It'll be your turn. Catherine: This can't wait. Sara: It can't, or you can't. Catherine: Both, go have a cup of coffee on me. (Sara stares at Catherine for a second and then gets up) Sara: The coffee's free. Catherine: Thank you.