With ‘The Catch,’ Mireille Enos Takes a Break From the Bleak

Mr. Scheffer and Mr. Olsen wrote Ms. Enos’s character into more episodes, then turned her into a series regular. When HBO asked for a cast reduction, the two men even devised a way to fire Ms. Enos and still keep her on the show. They killed off Kathy then rehired Ms. Enos as a guest star to play Kathy’s frowning identical sister, JoDean. “She created this totally different character — very noir, kind of deadpan funny,” Mr. Scheffer said. “Some of our main actresses were even kind of jealous. They were like, ‘Oh, she gets this great exit, and then she gets to come back as her evil twin?’”