The bomb kills its deliverer a believer in the cause who was also pregnant. What jumble of contradictions was going on in that mind. But the known associates of the bomber are revealed and they turn out to be a couple of women Bridgit Ryan and Caroline Kava. So fanatically devoted to their cause they kill for it.
Both are religious fanatics, especially Kava the ringleader of the conspiracy. A great example of what can happen when you take religion too seriously. No Moslem bomber has anything on her.
The case causes a serious divide between Chris Noth and the very Catholic George Dzundza. As bad as it got in that first season of the original detectives on the show.
Michael Moriarty beautifully nails Kava on the witness stand. That's worth watching this episode alone for.