Dagger Isle lies north of Verity Isle and to the east of the Drylands. The Island is a quiet place, housing the Shrine of Honesty. Some mountains and forests add to the picture of a peaceful place. Directly east lies the small Janus Isle, where the dungeon Deceit is located.
During the time of the False Prophet in Ultima VI, the pirate Bonn had shipwrecked there and went totally crazy. And by the time of Ultima VII, several crypts had been erected in the caves of the island.