Louise Simonson 
Death of Baldur [PDF ebook] 

Baldur, Odin’s greatest son, is a leader of men — and loved by all. So when a prophecy is made that the end of the world, Ragnarok — the Twilight of the Gods — will occur when Baldur dies, Odin imprisons all those who might be involved in the death of his beloved son. But fate is fate. Baldur will die. The only question is how — and the only result is the beginning of the end for all of creation.