The Day of the Jackal - Identity of the Jackal Remains Unclear
Mallinson:
There's no question of Her Majesty's Government ever conceding the fact that this Jackal was an Englishman. So far as one can see, there was a period when an Englishman came under suspicion, but he has now been cleared. Certainly, the Jackal masqueraded as an Englishman, but he also masqueraded as a Dane and as a Frenchman. So there's no way of proving his identity at all.
Inspector Thomas:
But, if the Jackal wasn't Calthrop, THEN WHO THE HELL WAS HE?
Quotes sourced from Wikiquote (© Wikiquote contributors), licensed under CC BY-SA 4.0. Modified for formatting/length.