ABC Family uncovers Pretty Little Liars spin-off

US cable channel ABC Family has ordered a spin-off of its teen mystery thriller series Pretty Little Liars, which will get a fifth season.

Hour-long drama Ravenswood will be set in a town that has suffered from a deadly curse for generations not far from the home of Pretty Little Liars. It will follow five connected strangers who must dig into the town’s past to save themselves from demise.

Pretty Little Liars executive producers I. Marlene King, Oliver Goldstick, Joseph Dougherty and Leslie Morgenstein and production company Warner Horizon Television are attached.

The show will launch in October following an annual Pretty Little Liars Halloween episode.

Meanwhile, ABC Family has greenlit a fifth season of Pretty Little Liars.