Death Is in the Air
Season	4
Episode	13
Air Date	February 17, 2010
Written by	Bill Callahan Anupam Nigam
Directed by	Stephen Surjik
Guests	Ernie Grunwald Cullen Douglas Liam James Judd Nelson
Previous episode	"A Very Juliet Episode"
Next episode	"Think Tank"

Shawn and Gus try to recover a stolen lethal pathogen, which could be released in the city by the thief (Cullen Douglas).