Masterpiece Mystery!: Sherlock III: The Sign of Three
Sunday, September 13 at 9:00 p.m.
Sherlock faces his biggest challenge of all — delivering a Best Man’s speech on John’s wedding day.
Benedict Cumberbatch and Martin Freeman star as Sherlock Holmes and John Watson. Rupert Graves guest stars at DI Lestrade, with Una Stubbs as Mrs. Hudson and Mark Gatiss as Mycroft Holmes. Amanda Abbington is Mary Morstan.