THE EX-HUSBAND
It was clear from episode one that there was no love lost between Julia and her ex-husband, MP Roger Penhaligon. The chief whip, played by Nicholas Gleaves, hates her on a personal and professional level for her ambition. Could killing her be his way of thwarting her plans to be PM? Matt says he’s a very unlikely suspect. “It’s very unlikely he’d choose such an extreme way of getting back at her – he could have found other ways, revenge or political embarrassment,” he says. MURDERER MARK: 1/10