One for Hallowe'en perhaps?

I think the poem is fantastic and ranks among the great poetic narratives. It held me spellbound until the end, even though I normally get bored with longer poems.....but what a great shame about the last line. The poem would have been absolutely perfect if you had either managed to rhyme something with return or to change return for something to rhyme with the word done. As I was reading it it was going great and as I came to the last two lines it all changed and seemed slightly incomplete. A good rhyme at the end in my opinion would have stamped finality on it and cast it to memory more.