EXPOSÉ's second episode, "Think Like a Terrorist (Pt. 2)," premieres tonight on PBS. Check local listings for your area.

>> Retrace Carl Prine's steps on an interactive railroad map that includes audio slideshows of sites he visited. Graphics and slideshows are courtesy of the PITTSBURGH TRIBUNE-REVIEW.

>> Monday on the Muckraker Blog: What every responsible journalist should know before casing a joint.