The old Judges Guild books are by and large full of great story ideas. Unless you are using 1st Edition, you may well have to do a great deal of conversion, but in most cases the low price makes them a resource well worth the investment. This is an average quality effort.
This is one of the classic adventures i grew up with. I went through it as a player and died many times.... I then ran it in my AD&D game several times. It is an original d&d module and is an absolute classic. It is one of the best from the old judges guild (aside from Dark Tower or the city state). It will take quite a bit of work to update to 3rd edition, but if you like old school d&d, this one is a must.