- Joe Mantegna (David Rossi)
- Paget Brewster (Emily Prentiss)
- Adam Rodriguez (Luke Alvez)
- Kirsten Vangsness (Penelope Garcia)
- A.J. Cook (Jennifer Jareau)
- Aisha Tyler (Dr. Tara Lewis)
- Zach Gilford (Elias Voit)
- Ryan-James Hatanaka (Tyler Green)
Criminal Minds — S4E24
Episode: Amplification
Air Date: 2009-05-13
Runtime: 41 min
Overview
When a new type of chemical warfare is released into the open air, the BAU must act quickly to find the source before any more innocent people are exposed.