| Henry Semple | |
| Name | Henry Semple |
| Occupation | Student |
| Pathology | Mass murderer School shooter |
| Family | Bill Semple (father) Patricia Semple (mother) Unnamed sister |
| Status | Imprisoned |
| Actor | Timothy Reifsnyder |
| First Appearance | "School Daze" |
Henry Semple was a school shooter who killed four students and wounded eleven others at his high school.
During the trial, Henry's father Bill revealed that Henry always had a propensity for violence, and that he had even hurt his younger sister a few years before the shooting. Henry was tried and convicted of four counts of murder in the second degree and sent to Sing-Sing Correctional Facility for 25 years.
Jamie Ross was his defense attorney. (L&O: "School Daze")
