Hudson and Rex embark on a high-stakes mission to locate a young girl who has been abducted. Rex must demonstrate his exceptional abilities by skilfully trailing a kidnapper.

Detective Hudson and his canine partner, Rex, reveal a conspiracy within the parkour community, after a thrill-seeker falls to his death.

The duo discover the body of a woman, who may be linked to a recent case, in a graveyard; Donovan asks Charlie to spy on his daughter.

Charlie and Rex investigate the suspicious death of a controversial college professor, who is found lifeless in his classroom; Jesse lands himself in trouble during an undercover mission.

Detective Hudson and his trusty German shepherd companion, Rex, launch an investigation into the untimely demise of a pet sitter.

Hudson and Rex delve into a series fatalities at a retirement facility as they embark on an investigative journey.