The Strain has been renewed for a second season.
The Guillermo del Toro horror series, which stars Corey Stoll and David Bradley, been handed a new run of 13 episodes which will air in summer 2015.
FX CEO John Landgraf said of the recommission: "It is thrilling when you have a show that is a creative and commercial hit, which is a rare accomplishment in this increasingly crowded marketplace.
"We look forward to having [The Strain] on FX for as long as Carlton, Guillermo and Chuck Hogan need to tell this epic tale."
The Strain will launch its first season on September 17 at 10pm on Watch in the UK.
Catherine Mackin, director of acquisitions for UKTV, said: "The Strain feels totally fresh in the horror/fantasy genre - forget everything you've seen about vampires, as this series will turn it on its head and leave you spinning.
"It has a rich heritage of writing talent combined with stunning visuals and outstanding acting, and we can't wait to bring this exciting and epic series to Watch.
"We are also delighted to be extending our relationship with 20th Century Fox Television Distribution and bringing more quality drama to the UK."