“When Betty Ann Miller arrives on The Reef, she presents Cat Chambers an offer too good to refuse,” reads an ABC synopsis for the episode. On Episode 9 of Reef Break, titled “The Hohenzollern Collection,” Harden plays Betty Ann Miller, a cunning woman who is looking to make a deal with Cat. She’s been in countless shows, including The Newsroom and How To Get Away with Murder, and she had a recurring role in the CBS medical drama, Code Black. Harden has been featured in films like Meet Joe Black, Mystic River, and the Fifty Shades series of films, but she is most known for her Academy Award-winning performance as Lee Krasner in the 2000 film, Pollock. To start, the character is played by actress Marcia Gay Harden, who you may recognize from her various award-winning roles over the years. The new character is a thrilling new match for Cat, so fans are wondering, who is Betty Ann Miller on Reef Break? The thief-turned-fixer’s instincts are proving to be useful for the island’s government and local police, but in a sneak peek for the upcoming episode, she’s facing off with a different kind of foe. From jet ski assassins to hijackers, Cat Chambers (Poppy Montgomery) helped bring down plenty of villains on this season of Reef Break.