half a kingdom, an Icelandic folktale

"When you wake up in the morning you never can tell what might happen to you during the day." Thus begins, and ends, a most enchanting folktale about a prince who is kidnapped by two troll girls and the poor peasant girl who rescues him. Although all the kings' strongest and wisest men had failed, Signy is able to accomplish the task by means of a magic spell, two swans, a giant golden egg, and a little help from the young prince.