Cook’s notoriety crested following the 1990 publication of what many consider his best – and most repulsive – work: the tortured, redemptive tale of a masochistic serial killer, I Was Dora Suarez. To Cook’s delight, the ensuing novel caused Dan Franklin, the publisher of its three predecessors, to vomit over his desk. As a result of this reader response, Secker & Warburg told the author to take his nauseating wares elsewhere. Scribner took over the fourth novel in the factory series. Writing for The New York Times, Marilyn Stasio proclaimed, “Everything about I Was Dora Suarez...shrieks of the joy and pain of going too far.” Filmmaker Chris Petit described it in The Times as “a book full of coagulating disgust and compassion for the world’s contamination, disease and mutilation, all dwelt on with a feverish, metaphysical intensity that recalls Donne and the Jacobeans more than any of Raymond’s contemporaries.”
Cook recognized I Was Dora Suarez as his greatest but most onerous achievement: “Writing Suarez broke me; I see that now. I don’t mean that it broke me physically or mentally, although it came near to doing both. But it changed me; it separated out for ever what was living and what was dead. I realised it was doing so at the time, but not fully, and not how, and not at once. […] I asked for it, though. If you go down into the darkness, you must expect it to leave traces on you coming up — if you do come up. It’s like working in a mine; you hope that hands you can’t see know what they’re doing and will pull you through. I know I wondered half way through Suarez if I would get through — I mean, if my reason would get through. For the trouble with an experience like Suarez is that you become what you’re writing, passing like Alice through the language into the situation.” (The Hidden Files, pp. 132–133.)