From the back of the book:
"From dragons to goblins, giants to fairies, this is the essential book of monsters for the Castles & Crusades. In this book, you will find a wealth of information about monsters and the treasures they keep. Combat, spell casting, breath weapons, movement, poisons, treasures, magic creation, magic items and much more lies within these pages.
Easy-to-learn and simple to play, Castles & Crusades is a fast and fun game for those who enjoy tales of high adventure and epic fantasy. Along with the Castles & Crusades Players Handbook, Monsters & Treasure delivers you all the rules you need to play this fast paced game of rousing adventure.
Castles & Crusades is an easy-to-learn attribute-based rules system allowing players to choose among 13 archetypal character classes and 7 races to create characters with which to undertake many a dazzling adventure.
Gather some friends, grab some dice and unleash your imagination. You are entering the grand adventure that is Castles & Crusades!"
The 4th Edition was entered separately due to larger page count.
Can be found here Monsters & Treasure (4th Edition).