Given how the episode ends, Brass makes an ironic comment to Grissom when he asks the CSI when the last time he drew his weapon was. The end of the episode sees Grissom pulling that weapon to save Nick, who is being held at gunpoint by the clearly unhinged Amy Hindler.
Though Grissom is very much a scientist, this is the first time we really get to see him in action, so to speak, and he rises to the occasion. There's no hesitancy in his action; he's as calm and collected holding a gun and talking Amy down as he is in his lab running an experiment.
We finally get to meet Eddie Willows, Catherine's ex-husband, a manipulative charmer who feels no remorse about playing on his ex-wife's lingering feelings for him. He has no hesitation about using their daughter, Lindsey, to get Catherine to help him: he asks her whether she wants their daughter to see her father in the park...or in jail. Whether it's for Lindsey's sake, Eddie's or her own, Catherine is swayed by his argument and pursues the case, even going so far as to call on her strip club connections to get into the strippers' locker room.
The case opens up a glimpse into Catherine's past, and rather than being ashamed of her previous employment as an exotic dancer, Catherine claims it and embraces it. When Greg suggests he might have seen Catherine dance at some point, she brazenly tells him that if he had, he would remember.
And yet, as tough and proud as she is, Catherine is still clearly susceptible to Eddie's charms. He tells her he married up when he married her and reminds her in the park where she's taken Lindsey that they were good together sexually. If Lindsey hadn't interrupted, would Catherine have kissed her ex? It's definitely possible.
As much as she's not quite yet able to chuck Eddie, she has no problem defying Grissom. Grissom tells her repeatedly to remove herself from the case, but Catherine is determined to see it through. As clueless as he can be about people sometimes, Grissom does see through to her real motivation: she's still in love with Eddie.
Grissom himself might be feeling a few tugs on the heartstrings himself: there are definitely sparks flying between him and pretty facial reconstructionist Teri Miller. Grissom takes an interest in Teri's work, and Teri takes an interest in him, boldly leaving her number on his cold case bulletin board. "The ones that got away," Grissom muses.
