Perkins, a three-time Emmy nominee, will play Melanie Cave, the mother to Warren (Paul), who is the subject of Poppy’s podcast.
The role reunites Paul with Apple chiefs Zack Van Amburg and Jamie Erlicht, who produced Breaking Bad when they worked as co-presidents of Sony Pictures Television.
The thriller/drama is being written and produced by Nichelle Tramble Spellman (The Good Wife), who will also serve as showrunner.
Paul stars as convicted murderer Warren Cave, whose guilt or innocence has remained a question in many people’s minds for the past 20 years.