Had they any clue, or 103 would the whole thing remain in the category of undiscovered crimes? 
They didn't think it would remain undiscovered, in fact they knew it would get uncovered.
mnli hypothesis: They didn't think it would remain undiscovered, in fact they knew it would get uncovered. premise: Had they any clue, or 103 would the whole thing remain in the category of undiscovered crimes? 