Oh Mamma! Where to start with the Johnlock. The one that got me into it is
A Cure for Boredom (http://archiveofourown.org/works/335385/chapters/542163)
in which Sherlock is bored and finds a way to pass the time with John that
involves an underground sex club. Very well written and sort of a fandom
classic.
Also pretty much anything by Ivy Blossom (who started in Harry Potter
fandom). These are probably the most in-character fics I know.
The Progress of Sherlock Holmes
http://archiveofourown.org/works/173274/chapters/253157
The Quiet Man http://archiveofourown.org/works/322978/chapters/520106
no subject
Oh Mamma! Where to start with the Johnlock. The one that got me into it is A Cure for Boredom (http://archiveofourown.org/works/335385/chapters/542163) in which Sherlock is bored and finds a way to pass the time with John that involves an underground sex club. Very well written and sort of a fandom classic.
Also pretty much anything by Ivy Blossom (who started in Harry Potter fandom). These are probably the most in-character fics I know. The Progress of Sherlock Holmes http://archiveofourown.org/works/173274/chapters/253157 The Quiet Man http://archiveofourown.org/works/322978/chapters/520106