Michael Mitchell

At the ranger station, Russell discovers a barely alive Air Force officer named Paxton (Nick Cokas) -- who's wearing a wet suit.

Veronica helps animal researchers track down their missing monkey by going undercover. Meanwhile, Mindy O'Dell asks Keith to investigate her husband's death.

Underlay might get the quarantine he has requested when Russell discovers that escaped laboratory animals may be responsible for a deadly flu virus that has spread throughout Homestead.

Piz escorts a singer performing at a benefit concert, but when his property goes missing, Veronica helps. Meanwhile, an unlikely candidate challenges Keith's sheriff run.

Joy feels inferior for not finishing college, so she decides to hit the books and earn her degree. Although she passes her classes, Eddie isn't satisfied with her grades, and he decides to take matters into his own hands, which leads to Joy getting kicked out of school.

One of Russell's fellow workers has been shot and killed by Underlay, and Russell questions the mysterious circumstances surrounding the shooting death.