The Red Mantis
Almost nothing is known about the involvement or motivation of the assassin cult of Mediogalti at the moment.
What is known is that two of the castaways on the Shiv (Sasha and Anguise) developed some kind of relationship during that time. Around the same time that the Pathfinder expedition was forming Sasha’s mother, a member of the Red Mantis, approached them and made an offer to the group through them. The other castaways were not interested in working with an assassin cult and Sasha and Anguise departed overnight without another word.