The Sign of Three

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.

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

Amanda Abbington

Mary Morstan

Ed Birch

Tom

Debbie Chazen

Vicky

Yasmine Akram

Janine

Alistair Petrie

James Sholto

Alfred Enoch

Bainbridge