London rules

"London Rules might not be written down, but everyone knows rule one: Cover your arse. At MI5 headquarters Regent's Park, First Desk Claude Whelan is learning this the hard way. Tasked with protecting a beleaguered prime minister, he's facing attack from all directions himself: from the showboating MP who orchestrated the Brexit vote, and now has his sights set on Number Ten; from the showboat's wife, a tabloid columnist, who's crucifying Whelan in print; from the PM's favorite Muslim, who's about to be elected mayor of the West Midlands, despite the dark secret he's hiding; and especially…