This article is a stub. You can help the Forever Knight Wiki by expanding it. Agnes Ferguson Agnes Ferguson (from "If Looks Could Kill"). Portrayed By Allison Hossack (younger Agnes) Agnes ages rapidly when she no longer receives her "treatments". The role of Agnes Ferguson is played by Allison Hossack in the Season One episode "If Looks Could Kill". Retrieved from "https://foreverknight.fandom.com/wiki/Agnes_Ferguson?oldid=24944" Categories: Stub Human Characters Guest Characters Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.