User blog comment:TemplarAgent/ACIV MP Wanted/@comment-1888015-20130612223823

We know the names of 3 of the "unknown" characters.

Domino mask lady is the Puppeteer (reminds me of Hellequin, yay), leather-clad man is the Physician I believe, and the red-haired man is the Cutthroat.

The island in question is Saba Island.