Holly Stegman Gender:   Female Portrayed by: Erin Torpey  First Appearance   ●   NCIS: Dead Man Walking  Last Appearance   ●   NCIS: Dead Man Walking List of Appearances

Holly Stegman was a woman who worked for the International Atomic Energy Agency and who was responsible for poisoning her colleagues, Lt. Roy Sanders and Mark Sadowski.

Victims

• Roy Sanders- (poisoned, eventually succumbed to the illness and died).
• Mark Sadowski- (poisoned).
• Leroy Jethro Gibbs- (attempted to run down).
• Timothy McGee- (attempted to run down).