TV-PG. Detective Charlie Hudson teams up with what he calls his "highly trained law enforcement animal" German Shepherd dog named Rex who he prefers to team up with because he doesn't talk his ear off.

TV-PG. Hudson and Rex investigate the death of a parkour daredevil.

TV-PG. When a professional pet sitter is killed by a tree while looking after a tiny dog, Hudson and Rex take the case and discover everything from blackmail to a foot fetish.

TV-PG. Charlie and Rex open a cold case that may be connected to a recent case; Donovan asks Charlie to spy on his daughter. Viewer Discretion Advised.

TV-PG. When a controversial university professor is found dead in his classroom, Charlie and Rex investigate leads while Jesse goes undercover and soon finds himself danger.

TV-PG. Hudson and Rex investigate a string of recent deaths at a retirement home.

TV-PG-V. A gunman takes hostages at a lab to find proof they altered his wife's brain in a drug trial.

TV-PG. When a food truck blows up killing a young woman, it's up to Rex to sniff out the killer.

TV-PG. Charlie investigates the host of a morning show after her media mogul husband is found dead.

TV-PG. Charlie investigates when a gallery curator is found murdered on his showroom floor.

TV-PG. Activists break into a bottling factory to get their message across, until one is killed.

TV-PG. When Donovan's ex, a recovering addict, wakes up with blood on her hands and a dead roommate in her apartment, the team moves quickly, finding there's more to the story.

TV-PG. When a deadly car accident leads Charlie and Rex to investigate reports of a mysterious blue light in the sky, they discover the truth is more science than fiction.