The Crack in the Lens followed Sherlock Holmes for 9 months in 1871. The Consulting Detective Trilogy extends from 1872 through 1881 -- covering the years he spent at University, On Stage, and finally his early detective practice at Montague Street before he meets Dr. Watson and they move into 221b Baker Street. Through these four books we see Holmes develop from a 17 year-old young man who has not real vision of his future to the Great Detective we know and love.
The Consulting Detective Trilogy Part III: Montague Street will be released in October 2024. It includes many of the famous "untold tales" as well as a more in-depth telling of the Musgrave Ritual.