Fate Horror Toolkit Supplement - Rules of Play says:

The Fate Horror Toolkit offers a variety of tools, mechanics, and hacks to help you develop thematic horror in your game. Explore what horror is and how to employ it effectively at your table. Learn how to develop horrific elements in Fate—a game system designed around competent, proactive characters not usually seen in horror. Pick from a variety of mechanics to easily design your own game about the things that go bump in the night. The Fate Horror Toolkit is a Fate Core supplement.

This Toolkit includes:

• Extensive tools to make scary and effective horror adversaries and running Fate games where doom is inevitable
• Modified and thematic compels designed to help up the suspense and visceral horror elements in your games
• A variety of new aspect types such as legacy and intensity aspects to help develop thematic horror elements and define boundaries
• A campaign framework for running horror stories based on teamwork—particularly good for younger audiences.