Returning from death on an island

By rgrove0172, in Descent: Journeys in the Dark

A glyph must be activated by a character before another my pass through it, returning from town for example.

In a typical Dungeon the characters start on a glyph, but not so on an island.

If a character dies on the island, and the glyph there hasnt been activated yet, how do they return? If they cant, then what happens if all characters die and the glyph still wasnt activated?

Are they all back in town for the next campaign turn? Their ship returns to them? Do you count it as Fleeing the Island?

Help

In an Island level, the Revenge features an activated glyph - see the rules for Island levels.