havent hashed out the length yet, but plenty of clues as it progresses. Barring the scent clues, there will be various clues that someone with a great knowledge of magic did the murders, specifically someone with a strong knowledge of necromancy.

It will deeply involve old Celtic spells in many places regarding the dead, pre-christianity, as well as several hints that the caster is a catholic despite all that, regarding burial rites.

As for end game, that depends on who catches him, and if they want to seek justice or attempt to end the curse that holds him.