John/Helen/Nikola:
"Indecent" by
penknife (NC-17) --
A lot has changed since the 1880s, but they haven't really acquired any more common sense. Set handwavily sometime in season 2, before "Sleepers" and "Haunted."Helen/Nikola:
"Understanding" by
penknife (NC-17) --
The last thing Helen wants after the hunt for Adam Worth is over is to think about John Druitt. Set in 1910, with major spoilers for "King and Country."Helen/Nikola, Helen/John:
"Certainties" by
anxiousgeek (PG-13) --
John knows Tesla loves Helen and doesn't like it. Tesla doesn't care.