As one of Los Angeles’ top dog trainers, Stevo Henderson – along with his Checkmate K9 crew - is on a mission to transform troubled and ‘untrainable’ dogs into reliable working dogs and great family pets.

We follow Stevo as he rescues dangerous feral dogs – commonly known as ‘Hellhounds’ - from the streets of south Los Angeles and then watch as he sets about evaluating them in the hope that they can receive training for a job in security or protection. We also watch as he deploys his innovative training methods and uncanny understanding of canine behaviour, in order to repair relationships between dogs and owners and to ensure neglected dogs find a loving new home.