A decorated K-9 who helped investigators track down one of Maryland’s most dangerous arsonists has died.

Misty, a 13-year-old Labrador Retriever, was instrumental in finding patterns at fire scenes, and as a result a task force was created to help capture Thomas A. Sweatt, an arsonist responsible for firebombing dozens of homes and killing two elderly women.

Misty also appeared on an episode of Forensic Files titled “Hot on the Trail” about the 22-month investigation that led to Sweatt’s arrest in 2005.

Misty worked for Maryland’s Prince George County fire department with handler Scott Hoglander.

She retired in 2006 and continued to live with Hoglander.