Veronica searches for a missing monkey from a Hearst research lab, and her investigation leads her to an animal rights' group called P.H.A.T. She and Mac go undercover as super activists, but they discover that the group isn't connected to the lab theft. Still, the group's leader falls for Mac and at Veronica and Parker's urging, the sheepish computer gal shows some interest in him. Meanwhile, Dean O'Dell's widow asks Keith to investigate her husband's death, which she does not believe is a suicide as the coroner determined. Keith looks into the matter and suspects foul play too, but his chief suspect, Professor Landry, is already two steps ahead of Keith. And Dick pushes Logan to forget about Veronica, but Logan goes a little too far and sleeps with another girl, complicating matters when Veronica comes back to him for reconciliation.