- Sean Murray (Timothy McGee)
- Wilmer Valderrama (Nick Torres)
- Katrina Law (Jessica Knight)
- Brian Dietzen (Jimmy Palmer)
- Rocky Carroll (Leon Vance)
- Diona Reasonover (Kasie Hines)
- Gary Cole (Alden Parker)
NCIS — S6E21
Episode: Toxic
Air Date: 2009-04-07
Runtime: 44 min
Overview
When a government scientist goes missing, Abby is recruited to carry on his work, but the team worries that she may meet the same fate as her predecessor.