Go, Nick! I mean it -- we usually see Nicky as this slack-jawed bumpkin who couldn't reason his way out of a paper bag, and it's really refreshing to see him excelling in an area of crime scene investigation. In this case, Nicky's innate empathy for people comes in handy in taking control of a scene and talking to witnesses -- and he had to do so while also Liam-sitting. Go, Nicky! It's your episode!

When we get back from commercial break, Liam and Nicky are climbing down the escarpment, away from an ambulance and back toward the accident scene. Nicky is telling Liam to quit apologizing; Liam says, "But I feel bad! I just froze up!" Nicky replies, "That's why we have field training. No disrespect, but you're not qualified to be out here." Liam says that he was thrown off by the blood: "Pre-collection, it's so different." Nicky agrees, and tells Liam, "I remember my first time in the field. CSI-1, green as could be. Initial call was a robbery. I get there -- triple homicide. Blood all over the place. Mother and two kids." Liam asks, "How do you deal?" "You just do," replies Nicky.