Sherlock's and Joan's new careers as consultants for Scotland Yard in London take them inside the tabloid journalism industry when a popular model is the victim of an acid attack. As Joan grows increasingly homesick for New York, Gregson is wracked w... (more)ith guilt over his unresolved rift with his former consultants.

Danny Schwarz, Dave Shalansky, Federico Dordei, Harry Smith, Ian Harkins, Jamie Thomas King, Maritz Veer, Ophelia Lovibond, Ravi Kapoor, Saffron Burrows, Tamsin Greig, Tara Summers, Tom Vickers