By far the most unlikely star of a prospective fall situation comedy is that still-active lead singer of the Rolling Stones, who has signed on to an ABC pilot for its fall schedule. Just to increase the degree of unlikelihood, Mr. Jagger shot his scenes for the New York-based pilot in a hotel room in Auckland, New Zealand, last week.

That was the culmination of a saga at least as whimsical as the premise of the show, which, for now, anyway, is titled "Let's Rob Mick Jagger."

The writing team that came up with the idea, Rob Burnett, long David Letterman's executive producer, and his partner, Jon Beckerman, had previously created the NBC comedy-drama "Ed." As Mr. Burnett outlined the tale in a telephone interview, he and Mr. Beckerman "wondered if there was a way do a serialized comedy — something like a comedy version of 'Lost' or '24.' "

Hatched in numerous meetings, the concept centered on a janitor for a prominent New York building, to be played by the character actor Donal Logue. Down on his luck, the janitor sees a celebrity on television wallowing in his wealth during a tour of his new Manhattan penthouse. Enlisting a crew of similar ordinary but frustrated accomplices, the janitor conceives a plot to rob the big shot's apartment, a story line that would unfold over a 24-episode television season.

From an article in the New York Times