It's just a matter of time until these guys wise up and delve into the fertile swamp mud that is New Orleans 1818.
Jean Lafitte leads a small squadron of pirates with sponsorship and guidance from French emigrés to St. Helena, where they liberate L'Empereur and fetch him back to Barataria, only to find he is very unwell.
They smuggle him into New Orleans, but the doctors there can do nothing, so they take him across the river, into the heart of darkness, Algiers, where the Voodoo is strong, and the mandbos draw the arsenic out of him.
Knowing their spies and assassins would have no chance in the deep unknown of dark arts Louisiana, the crowned heads of Europe send their Silver Bayonet squads to intervene. Find Napoleon. Rescue him. Kill him. Mandates vary.
Pirates, brigands, elusive Choctaw and Chitimachas, le loup garou, Haitians, American adventurers, blood witches, Voodoo, Creole, the vampire Lestat, an American Silver Bayonet group, river rats, swamp runners, smugglers, zombies, ex pats from everywhere and maybe a dark arts Harry Potter school of witchcraft and wizardry with a basilisk as the school mascot.
The scenario books would write themselves, to Hades with AI.