All Quiet on the Holmes Front - Season 3 (2022)

Sherlock Holmes and Dr. Watson revisit the case of The Sign of Four when they attempt to retrieve the Agra treasures that were lost to the Thames River Bank.

When Mary Watson's wedding ring goes missing, she suspects foul play by Moriarty and his cohorts

When military documents are stolen from a Government building, and the suspects caught, but minus the documents, Sherlock Holmes and his friends are called in to get to the bottom of it.