Sort of like a Mafia Jailor role the kidnapper will choose one person a day (3 uses) to drag into his house and not to let out. Their avatar will be missing from the town but no announcements will be made. They won't be able to participate in the morning chat or votes and will be released on a night to use their night ability.
This role will be unique and if hung will leave behind a note with the first or last letter of a random member of their mafia.
Very barebones explanation but let me know what you think