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Mary-Louise Parker is headed to AT&T’s Audience Network. According to The Hollywood Reporter, the Weeds star has joined the network’s upcoming series Mr. Mercedes.

Based on the book by Stephen King, the drama “follows a demented killer (Harry Treadaway) who taunts a retired police detective (Brendan Gleeson) with a series of lurid letters and emails, forcing the ex-cop to undertake a private, and potentially felonious, crusade to bring the killer to justice before he is able to strike again.” The cast also includes Holland Taylor, Kelly Lynch, and Jharrel Jerome.

Parker has been cast as Janey Patterson, the younger sister of the late Olivia Trelawney, who helps the detective investigate Mr. Mercedes.

Mr. Mercedes is expected to debut on Audience Network this fall.

What do you think? Have you read the Stephen King book? Will you watch Mr. Mercedes?