|Portrayed by||Justin Chambers|
|First Appearance||Look Again|
|Last Appearance||Churchgoing People|
Chris Lassing was Lilly Rush's partner until the fall of 2003. Nicknamed 'Lass' by Lilly, he was a competent, hard-working detective but never quite shared Lilly's passion for cold cases. A smoker, he was also married and therefore wasn't fond of the long hours Lilly insisted on putting in. He later transferred out due to problems with diabetes. He was replaced by Scotty Valens, several weeks later.
- Lassing appeared only in the first, second, and fourth episodes