Holmes and Watson travel to Europe to escape Moriarty's vengeance.
Quest roles:
Rupert Graves(DI Greg Lestrade), Mark Gatiss(Mycroft Holmes), Una Stubbs(Mrs. Hudson), Amanda Abbington(Mary Morstan), Louise Brealey(Molly Hooper), Andrew Scott(Jim Moriarty), Timothy Carlton(Mr. Holmes), Sian Brooke(Eurus Holmes), Simon Kunz(Sir Edwin), Art Malik(Prison Governor), Wanda Ventham(Mrs. Holmes), Indica Watson(Little Eurus), Honor Kneafsey(Girl on Plane), Richard Crehan(Ben), Ralph Ineson(Vince), Clare Foster(Velma), Brett Allen(Special Unit Guard), Paul Weller(The Viking), Matt Young(Young Police Officer), Tam Mutu(Leonard), Rhys Rusbatch(Technician), Tom Stoughton(Young Sherlock), Aaron Richards(Young Mycroft), Harry Tuffin(Victor)
