A flash of something crosses Mark's eyes as he leans against the wall, as he shakes his head. This time, he has no comments about anything. He had to deal with Cindy's bulimia for too many years, and blood, well, let's just say that's not one of his favourite things in the world.

He smiles at Grissom, however, at his offer. "Sure." Granted, bugs aren't exactly his thing, especially with the latest Building Ant Infestation, but he's in no mood to see someone dead.