Sherlock Holmes 3 is the upcoming third installment in Guy Ritchie’s action-packed Sherlock Holmes film series, reuniting Robert Downey Jr. and Jude Law as the iconic duo — Sherlock Holmes and Dr. John Watson .

Set in late 19th-century London, this film dives deeper into the criminal underworld and introduces a new, more dangerous foe: Dr. Irene Adler (rumored to be played by Tessa Thompson ), a brilliant and mysterious adversary with ties to an ancient secret society planning to destabilize Europe using stolen scientific breakthroughs.
As Holmes investigates a string of high-profile assassinations and cryptic puzzles left at each crime scene, he finds himself outsmarted at every turn. For the first time, his deductive brilliance may not be enough — especially when betrayal hits closer than ever before.

With Watson now married and trying to leave the chaos behind, he is dragged back into Holmes’ world — facing deadly assassins, political conspiracies, and a final confrontation that will change both men forever.

Sherlock Holmes 3 promises mind-bending mysteries, jaw-dropping fight sequences, and the return of one of cinema’s most dynamic duos — in what could be their most dangerous case yet.