| Don Flack | |
|---|---|
| CSI: NY character | |
| First appearance | "Blink" |
| Last appearance | "Today Is Life" |
| Portrayed by | Eddie Cahill |
| City | New York City |
| In-universe information | |
| Occupation | Police Detective |
| Position | Homicide Investigator |
| Rank | NYPD Detective First Grade |
| Duration | 2004–2013 |
| Seasons | 1, 2, 3, 4, 5, 6, 7, 8, 9 |
Donald Flack Jr. is a fictional character on the CBS television series, CSI: NY. He is portrayed by Eddie Cahill.