Kill Screen

The discovery of some extracted teeth and dismembered digits in a purse results in an NCIS investigation when they are identified as belonging to a Marine. As the team tries to track down the killer, an investigator from an electronic security firm arrives, having traced the source of a number of computer hackings to NCIS. This makes McGee nervous as he had regularly illegally hacked into government computers under Gibbs' orders. The team manages to track down Maxine, who is the dead Marine's girlfriend and is an avid gamer and computer expert. She begins to take a liking to McGee. However, McGee tries to maintain his distance due to the events in "Defiance". She reveals that she had accidentally uncovered some sort of encrypted code in an MMORPG which turns out to be a program capable of hacking the Pentagon. The team tracks down the programmer responsible and shuts down his program, but he is found dead. Gibbs and McGee deduce that the investigator that arrived earlier was behind the killings, since news of such a threat to American security could ruin his career. Later, Dinozzo manipulates events to get McGee to start dating Maxine.