You can't write headlines much weirder than that, but it is not in dispute that Keith Wiens, a retired Royal Canadian Mounted Police officer, shot and killed his common-law wife after she demanded that he pay up—in foreplay, evidently—for losing to her in a Wii game.PWiens told a jury in British Columbia that he acted in self defense on that night in August 2011, and that his wife, Lynn Kalmring, attacked him with a knife. The two had had a rapidly escalating argument since getting drunk and playing Wii and making wagers "of a sexual nature," on the games.PWhen Wiens...