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Ahead on the 5/1 Maddow show

Tonight's guests include:Michael Isikoff, NBC News national investigative correspondent, live from BostonPhilip Mudd, former deputy director of the FBI’s

Tonight's guests include:

Michael Isikoff, NBC News national investigative correspondent, live from Boston

Philip Mudd, former deputy director of the FBI’s National Security Branch, currently a senior research fellow at the New American Foundation and author of “Takedown: Inside the Hunt for al-Qaeda”

Col. Lawrence Wilkerson, (ret.), former chief of staff to Secretary of State Colin Powell

Steve Kornacki, host of “Up” weekends on msnbc and senior political writer for Salon 

Here's tonight's soundtrack!

And here's executive producer Bill Wolff with a look at tonight's show: