Sherlock Season 4
Overview
Sherlock Season 4 is the fourth and final season of the crime drama. The season introduces a new villain: Eurus Holmes (Sian Brooke), Sherlock's secret sister, who is even more brilliant and more dangerous than Moriarty. The final season is a fast-paced, witty, and clever conclusion to the series. The series finale, "The Final Problem," is a powerful, moving, and fitting ending.
Cast
Benedict Cumberbatch
Martin Freeman
Una Stubbs
Rupert Graves