The announcement was made by Thomas Vitale, Syfy's executive vice president of programming and original movies.
"Lost Girl" stars Anna Silk as Bo, a Succubus who feeds off sexual energy.
"Raised by human parents, Bo had no reason to believe she was anything other than the girl next door -- until she 'drained' her first boyfriend to death," Syfy said in a synopsis. "Bo has since hit the road alone and afraid. She discovers she is one of the Fae, creatures of legend and folklore, who pass as humans while feeding off them in secret, as they have for millennia."
The show co-stars Kris Holden-Ried as Dyson, a shape-shifting Fae, homicide detective and Bo's love interest; Ksenia Solo as Kenzi, Bo's human confidante and street-smart survivor; Zoie Palmer as Lauren, a human doctor who competes for Bo's heart; Rick Howland as Trick, the mysterious owner and bartender at The Dal Riata tavern, with a secretive past that is yet to be unlocked; and K.C. Collins as Hale, a handsome male "Siren" who is the eternal bachelor, ultimate wing-man and Dyson's partner on the force, Syfy said.
"In one year, 'Lost Girl' has electrified viewers in Canada and around the world," Vitale said in a statement. "We're delighted to bring this fascinating, high-octane series, which depicts a unique world and memorable heroine, to the Syfy audience."