A war hero, invalided home from Afghanistan, meets a strange but charismatic genius who is looking for a flatmate; it is London, 2010, and Dr Watson and Sherlock Holmes are meeting for the first time. A string of impossible suicides has Scotland Yard baffled - and only one man can help.
Longworth gets his first taste of a Florida hurricane, but instead of waiting out the storm, he gets swept up in a murder investigation that appears to be a spree killing and he must find the killer before there is another victim. Meanwhile, due to the storm, Callie and Carlos deal with a massive influx of patients at the hospital and a power outage leads Carlos and Daniel to take extreme measures in order to save lives.
Richard takes the Volkswagen Touareg 4x4 to Sweden for a race against some snowmobilers. James travels to Germany where he attempts to break his personal speed record in a brand-new version of the Bugatti Veyron. Jeremy Clarkson looks at the reasons why Ayrton Senna is considered the best driver of his generation.