: The true killer is revealed to be Abby's lab assistant, Charles "Chip" Sterling . He framed Tony as revenge for Tony previously getting him fired from a medical analysis firm. The episode reaches a climax when Chip attacks Abby in her lab with a knife, but she manages to overpower and subdue him before the team arrives. Notable Production Facts

The episode centers on a high-stakes investigation when a pair of severed female legs is discovered in a wooded area on the Marine Corps Base in Quantico. The team is horrified to find that all forensic evidence—including a bite mark matching Tony’s dental records, his fingerprints, and even fibers from his car—points directly to as the murderer.

: The episode was directed by Thomas J. Wright and written by Laurence Walsh. "NCIS" Frame Up (TV Episode 2005) - IMDb

Due to the conflict of interest and the severity of the evidence, Director Jenny Shepard turns the case over to the FBI, with Agent leading the investigation. Key Character Moments

is the ninth episode of the third season of the police procedural drama NCIS , which originally aired on November 22, 2005. Plot Overview

: Distraught that her own forensic science is being used to convict her friend, Abby makes it her personal mission to find the true culprit. She works feverishly in her lab, eventually uncovering the forensic "slip-up" that reveals the frame-job.