After identifying the body in the cellar as Jimmy Sullivan, the hunt for his murderer begins. Cassie and Sunny begin by following up on the names written in Jimmy's diary. 'Frankie C' is identified as Sir Phillip Cross -- a government czar. 'Beth' is Lizzie Wilton, who also denies knowing Jimmy, but it is clear she was a very different woman in the 70s, before her current marriage. UK Edition.