TV. Drama: A Touch of Frost Stars: David Jason, John Lyons, Bruce Alexander. S13E01 Year: 2006 Title: Endangered Species Directed by: Paul Jackson Stars: David Jason, John Lyons, Bruce Alexander. Overview: Frost is summoned to a remote farm-house by criminal Kevin Flanagan who is in a blind panic. At the farm, he finds a crocodile and cages full of endangered species, as well as a severed leg. This transpires to belong to an Asian man, part of the gang who have been smuggling rare animals, and Flanagan, who has escaped the gang, is used by Frost to help locate its leader. At the same time, the Harris family are shocked to find the nude corpse of a local art teacher in their bedroom. A search of his studio yields revealing photos of a female colleague but it is the Harris' teenage son who literally holds the key to events. Meanwhile, Frost is forced to puppywalk a new trainee, DC Robert Presley (Blake Ritson), who has a lot to learn about divisional CID. End of Series 13.