Double Blind

Kevin Fulton, a spy planted in the IRA, thought he was dead when he faced interrogation by a notorious IRA enforcer. But, it turned out, the enforcer was also an agent. How British intelligence undermined the IRA.

Databases Loaded

The latest frontier of statistical research in baseball—and the newest front in the Yanks/Red Sox arms race—is defense. And it’s yielding some surprising insights about who is actually worth his salary.