Meet Roscoe, Murphy and Sherlock, the firefighters' most trusted and hard-working companions. Working tirelessly alongside their human counterparts, Roscoe, Murphy and Sherlock brave the still-warm sites of recent fires as part of the London Fire Brigade's fire investigation team. Wearing custom-made boots for protection, they identify the cause of fires and a variety of substances such as petrol using their greatest tool - their keen sense of smell! Selected at an early age, living with their handlers and attending thousands incidents together over their careers, the canine team are truly man's best friend. Fire Dogs- Four-Legged Heroes tells the uplifting and inspiring true story of London Fire Brigade's brave four-legged heroes for the first time.