Allison is visited once again by the ghost of Agent Cooper, who tries to help her figure out who the real murderer is in a confusing case. Allison begins to question Agent Cooper's motives though and is unsure whether or not she should heed his advice.
| Title | A Necessary Evil |
|---|---|
| Genres | Crime Drama Mystery Sci-Fi & Fantasy |
| Release Date | 2009-03-23 |
| Episode Runtime | 00 Hours 39 Minutes |
| Season Number | 5 |
| Episode Number | 7 |
| Production Companies | Pointe Studios, Picturemaker Productions, Grammnet Productions, Paramount Television, CBS Studios |
