The Sign of Three

Overview

Sherlock faces his biggest challenge of all – delivering a Best Man’s speech on John’s wedding day! But all isn’t quite as it seems. Mortal danger stalks the reception – and someone might not make it to the happy couple’s first dance. Sherlock must thank the bridesmaids, solve the case and stop a killer.

Episode Information

Guest Stars

Una Stubbs

Mrs. Hudson

Rupert Graves

DI Greg Lestrade

Louise Brealey

Molly Hooper

Mark Gatiss

Mycroft Holmes

Vinette Robinson

Sgt Sally Donovan

Lara Pulver

Irene Adler