The corpse of a shabbily dressed young woman has been discovered in the mud flats of the Thames at low tide. Police assume she's a prostitute, but Dr. Watson suspects something more and goes to his old friend Holmes, now retired and at very loose ends.
Not streaming on a subscription service in the US right now.
Starring Rupert Everett, Ian Hart, Nicholas Palliser, Neil Dudgeon, Anne Carroll, Tamsin Egerton, Perdita Weeks, Michael Fassbender, Helen McCrory, Julian Wadham