Based on Liane Moriarty's bestseller, this subversive, darkly comedic drama series tells the tale of three mothers of first-graders whose seemingly perfect lives unravel to the point of murder. Reese Witherspoon, Nicole Kidman and Shailene Woodley star.

When a chance encounter brings soldier John Watson into Sherlock's life, it's apparent the two men couldn't be more different, but Sherlock's intellect coupled with John's pragmatism soon forges an unbreakable alliance as they investigate a series of baffling cases together.

A one-off special has been confirmed by ITV and is expected to air in 2016, with the episode being recorded on Tuesday 22nd and Wednesday 23rd December 2015. It will be the show's final episode.