A very weak boy finds a sword (actually, it is the other way around) which gives him physical strength and ways for vengeance. If this sounds like Elric books by [a:Michael Moorcock|16939|Michael Moorcock|http://d.gr-assets.com/authors/1222901251p2/16939.jpg], it is because I had exactly this impression. The similarity soon ends; the rest of the book is distinctively Glen Cook: bleak, gritty, full of betrayals and double-crossings.
I am a big fan of [a:Glen Cook|13026|Glen Cook|http://d.gr-assets.com/authors/1207159752p2/13026.jpg], but this is probably his weakest book I read. It is not bad by any means, but everything else by the author is better. If you are interested in his works, read [b:Chronicles of the Black Company|400924|Chronicles of the Black Company (The Chronicles of the Black Company, #1-3)|Glen Cook|http://d.gr-assets.com/books/1317065062s/400924.jpg|390335], [b:Garrett, P.I|140665|Garrett, P.I|Glen Cook|http://d.gr-assets.com/books/1282586679s/140665.jpg|135567], [b:The Tower of Fear|400895|The Tower of Fear|Glen Cook|http://d.gr-assets.com/books/1174443275s/400895.jpg|1576908], or even Dread Empire series first.