London Rules, Herron - B+

            On the day terrorists kill a dozen innocents in a village that dates to medieval times, someone tries to run down Slough Houses's own Roddy Ho. Although all wonder if they'd have preferred his demise, they recognize it as a threat to them all, and they begin to tail him. And lo and behold, a second attempt is made at Ho's house and Lamb saves the day. MI5 determines that whoever attacked Ho was behind the Abbotsford bombing. Lamb realizes that the terrorists are following an old MI-5 template for destabilizing hostile nations, and if Ho is somehow part of a leak, Slough House could be in trouble. As the next step in the secret plan is to assassinate a populist politician, the slow horses divide up to keep an eye on the two likeliest candidates. Tragically, the newest slow horse, JK Coe, inadvertently kills one of the targets. When the slow horses capture the girlfriend to whom Ho leaked the information, they and MI5 headquarters narrow the search. The bad guys are N. Korean and not the usual suspects. While the security services focus on an attack at the memorial service in London, Shirley Dander and JK Coe head to the site of the first attack and stop the terrorists in their tracks. Once again Headquarters would like to shut down Slough House but cannot do so.