From the front cover:
Trapped in the mysterious Castle Amber, you find yourselves cut off form the world you know. The castle is fraught with peril. Members of the strange Amber family, some insane, some merely deadly, lurk around every corner. Somewhere in the castle is the key to your escape, but can you survive long enough to find it?
This module contains referee notes, background information, maps, and exploration keys intended for use with the D&D Expert rules. Be sure to look for other D&D modules!
For characters level 3-6.
Rescanned 2013 PDF edition includes 28-page booklet with 4-page map pull-out section, plus inside and outside of two-panel cover (4 pages) for a total of 36 pages. The map of Castle Amber on the inside of the cover is scanned as two separate pages, and a small strip of the map is missing in the middle where the pages meet.