Prosper is billed as an epic family drama that takes a provocative peek behind the curtain of power and privilege. 　　Roxburgh (The Crown, Rake, Elvis) will play Cal Quinn, the founder and global pastor of fictional Sydney megachurch U Star, and Gibney (Halifax: Retribution, Back to the Rafters, Wanted) is Abi Quinn, his wife and worship leader. Their powerful megachurch is one of...