Chain of Pearls

It's 1903 and the Merry Thieves are on patrol. Stranded in alleyway they find a deumas demon and an unconscious girl.

Philomena Woodstorm wakes in the London Institute- in the aftermath of a demon attack. More attacks keep coming. Philomena, who's father was a mundane and a mother descended from an ancient but seclusive shadowhunter family with a dark secret, must fight alongside the others at the institute- all while harbouring illicit and unreturned feelings for James' parabatai- the glamorous but troubled Matthew Fairchild.

DISCLAIMER!!
All characters (apart from the Woodstorm family) and story ideas belong to Cassandra Clare, I do not take credit for her works.