Need to Know

Following their lead from Fowler's files, Peter and Diana stake out a secret meeting in the hope of getting a jump on whoever was responsible for the plane explosion. <br> Back at the office, Peter briefs Neal on their latest case, a popular state senator named Gary Jennings who may be illegally funneling money into his campaign. Neal quickly earns Jennings's trust, but the only dirt Neal is able to dig up is a tenuous connection to an escort service. Neal sees a way to use the situation to link Jennings to the escort service. But in order to make it work, Diana is going to have to go undercover as a high-class prostitute.