Undying Love is based on a graphic novel created by Tomm Coker and Daniel Freedman, and it involves vampires. Warner Bros. managed to acquire the rights to the comic when it was in a big bidding war years back. Directors Joe Carnahan and Alex Aja have previously been attached to the film, but it looks like Leitch may end up being the one to get it made. Here’s the story summary:
In this horror-action tale, equal parts vampire mythology and Chinese folklore set in modern-day Hong Kong, ex-soldier John Sargent has fallen for a beautiful Chinese woman named Mei. The only thing keeping the star-crossed lovers apart: she's a vampire. To free Mei from the curse, Sargent sets out to destroy the vampire that made her.