A&E has prevailed in a bidding war with Showtime for the rights to John Ajvide Lindqvist's best-selling Swedish book Let the Right One In for a TV series adaptation. The novel was adapted into the 2008 foreign thriller of the same name by director Tomas Alfredson, which was remade into the English-language film Let Me In, starring Kodi Smit-McPhee and Chloe Moretz. Teen Wolf showrunner Jeff Davis is teaming with actor-writer Brandon Boyce to write the pilot script.

The original novel centers on a bullied young boy who becomes friends with a mysterious girl he eventually learns is a vampire. The series will take a slightly different approach, centering on the boy and female vampire, who live together in secret with the young girl's guardian. After a string of grisly murders rocks their sleepy Vermont town, a federal marshal comes to investigate, who has a mysterious past of his own. The property was optioned from Hammer Films Productions, which produced the Let Me In remake.

A+E Studios is developing the project in-house along with Tomorrow Studios' Marty Adelstein and Becky Clements, who will executive produce with Jeff Davis, Brandon Boyce and Simon Oakes. Brandon Boyce had a recurring role on Jeff Davis' Teen Wolf as Dr. Vandenburg, but he has also written the screenplays for Apt Pupil and Wicker Park. The project continues A&E's commitment to horror projects, following their hit shows such as Bates Motel and their new series The Returned, which just debuted last week.