The Sonata that Soothed the Sociopath's Soul (Sherlock Holmes x OC)

SEQUEL TO "The American Fire that Melted the Ice Man"

Sherlock Holmes had been through several life altering experiences in the past few years. Even if he didn't count his own faked death and eventual return, the marriage of his best friend to Mary might have been the first incremental shift. Her death could be considered a second. Of course, finding out about his sister Euros was one of the most significant shifts, and he and Mycroft's experiences with her at Sherrinford had forever altered both he and his brother's lives. But then the introduction of Sophia Cartwright into their lives forever changed both of them.
When Sophia's friend, Elizabeth Everett moves into the basement flat at 221B Baker Street, will Sherlock Holmes life be changed again?