It's a fiction that I read years back and I just can't remember the title to dig it up. I'm pretty sure it's on fan fiction or AO3 cause I haven't join live journal back then:D

It's sort of a case fic set in teen!chesters era. Dean was like 15 or 17 and Sam was like 12 or 13. John thought it was a creature but the monster turned out to be one or two humans. They might had a history with John?? but I'm really not sure about that :P

What I'm sure is that the boys were abducted by the bad man and they hurt Dean with a silver needle or silver hook kind of thing. Dean was pinned through hands and feet and shoulder and in a lot of pain but he was so awesome that he managed to free his hand and shoot the man with his injured hand and free Sam from the chains by shooting the chains. And afterwards John and Bobby to the rescue.

I am now desperate to find it but just can't. So I'd really appreciate it if any one of you recall such a fiction could you please send me the link or give me a hint of its title or something. Thanks a lot!