A Necessary Evil
Show: Medium --> Season: 5 - Season 5
AirDate: 3/23/2009
Runtime: 44
Voting: 7.5 (2)

Overview: 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.
Charlie McDermott
Brandon Whitman
Josh Holt
Young Man in Diner
Kurtwood Smith
Edward Cooper
John Ales
Hal Munzell
Eddie Driscoll
Adam Dietz
Maura M. Knowles
Rachel Stetson
Roy Abramsohn
Douglas Reilly
Ned Schmidtke
Terry Cavanaugh