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.
| Title | Amplification |
|---|---|
| Genres | Crime Drama Mystery |
| Release Date | 2009-05-13 |
| Episode Runtime | 00 Hours 42 Minutes |
| Season Number | 4 |
| Episode Number | 24 |
| Production Companies | Touchstone Television, The Mark Gordon Company, Paramount Television, CBS Studios, Erica Messer Productions, ABC Studios, ABC Signature, Entertainment One Television, Lionsgate Television |
