Stephenie Meyer has left the project as Lisa Zwerling and Karyn Usher join the spy thriller as new showrunners.

Twilight creator Stephenie Meyer is exiting her own Starz series The Rook.

The author, who had brought the spy thriller to studio Lionsgate via her production company, is said to be stepping away due to creative differences on the project. In the wake of her departure, Lisa Zwerling (Betrayal) and Karyn Usher (Bones) have joined Stephen Garrett as the drama's showrunners. Garrett was previously attached to The Rook as a showrunner and executive producer.

The series, based on Daniel O’Malley’s novel, is currently shooting its first two episodes in London and is slated to air in 2019. Zwerling and Usher will now exec produce the drama via their Carpool Entertainment production company. The pair already have an overall deal at Lionsgate TV.

The Rook centers on Myfanwy Thomas, a woman who wakes up in London with no memory of who she is and no way to explain the circle of dead bodies around her. When she discovers she is a high ranking official in the Checquy, Britain’s secret service for people with paranormal abilities, she then has to navigate the dangerous and complex world of the agency to uncover who wiped her memory and why she is a target.

The cast of The Rook includes Emma Greenwell, Joely Richardson, Olivia Munn, Adrian Lester, Ronan Raftery, Catherine Steadman and Jon Fletcher. Playwrights and screenwriters Sam Holcroft and Al Muriel penned the adaptation and will serve as co-executive producers. Kari Skogland, meanwhile, is directing the debut episode.