Celebrate 10 years with TVMaze premium.

The Grand Experiment

Rising tension between Sherlock and Watson bring their partnership to a crossroads, but they endeavor to put their differences aside while they help Sherlock's brother, Mycroft, who faces accusations of treason and murder.

Celebrate 10 years with TVMaze premium.

Guest Cast

View full cast list »

Cast Appearances

View full appearance list »

Episode Discussion

No comments yet. Be the first!

Login to leave a comment on this episode.
Celebrate 10 years with TVMaze premium.