And if it's Huan, the "shadow" who he serves would be Luthien with her cloak And if you take "madness tore me"
literally, you'll get "mad Carcharoth tore at me"! It all fits! You're a genius, Skip!!!
That was a really good clue, Nerwen! Usually, people put symbollic clues that you cannot take literally, but here you put one that has a simple literal meaning! It confused everybody!
Assuming it
is Huan...