A coming episode of the acclaimed FX drama Rescue Me" will tackle what may sound like a far-fetched plot line: that the attacks of Sept. 11 were an "inside job." The actor who espouses the theories on camera, it turns out, also subscribes to them in real life. The second episode of "Rescue Me's" fifth season, starting in April, may represent the first fictional presentation of 9/11 conspiracy theories by a mainstream media company (FX is operated by the News Corporation). "They're not discussed a lot in the press," Daniel Sunjata, the actor who plays Franco Rivera on "Rescue Me," told reporters at a television press tour last month. In the episode, Mr. Sunjata's character [describes] a "neoconservative government effort" to control the world's oil, drastically increase military spending and "change the definition of pre-emptive attack." To put it into action, he continues, "what you need is a new Pearl Harbor. That's what they said they needed." Mr. Sunjata surprised some of the TV reporters when he said that he "absolutely, 100 percent" supports the assertion that "9/11 was an inside job." The alternative theories "seem to me to make a lot more sense than the ones that are popularly espoused," he said, calling it admirable that the conversation was allowed within "Rescue Me." Peter Tolan, an executive producer, said Mr. Sunjata is "well read" and has "done a lot of research." "Look, obviously not all of us buy in," he told reporters. "But we went: 'Wow, that's interesting, and he's passionate about it. Let's use that.' "