Mission is a type of unique item. Missions were first introduced in the Dunwich Horror expansion. When an investigator draws a mission, he or she is given a list of locations to visit and a "sacrifice" that must be made in each one by discarding a certain amount of clues, items, allies, trophies or health/sanity points. Upon making the final sacrifice, the investigator either receives a reward or invokes a change in the status of the game (for instance, reducing the Ancient One's combat rating).
List of missions