BBC America has ordered eight episodes of drama “Killing Eve” from Phoebe Waller-Bridge for a 2018 debut. The thriller will revolve around a psychopathic assassin and the woman tasked with hunting her down.

Waller-Bridge, who also writes and stars in Amazon/BBC Three’s “Fleabag,” will serve as showrunner and executive producer, alongside executive producer Sally Woodward Gentle and Lee Morris. The series is produced by Sid Gentle Films.

“Killing Eve” is based on the “Villanelle” novella series by Luke Jennings. Eve is a bored, whip-smart, pay-grade security services operative who fantasizes about being a spy while working a desk job. Villanelle is an elegant, talented killer who clings to the luxuries her violent job affords her. The series topples the typical spy-action thriller as the two women, increasingly obsessed with each other, begin a large-scale game of cat and mouse.

“‘Killing Eve’ is a brilliantly fresh take on the cat and mouse thriller from Phoebe Waller-Bridge, a major new talent in television,” said Sarah Barnett, president of BBC America. “Underneath the deceptively simple and entertaining surface is a subversive, funny, obsessive relationship between two women, that plays out across some of the most and least glamorous locations imaginable.”