GURPS Classic: Monsters

They chase you, baying, through woods far from home. They lurk in the shadows to grab the unwary. They possess your friends and change them subtly. They smash through your bedroom wall and are on you before you can even scream. But you scream anyway.
Monsters.
This new sourcebook discusses the creation and dramatic use of individual, intelligent monsters in different genres and settings. It also details dozens of different creatures of horror, both traditional and original, with complete stats, descriptions, and adventure seeds. They are usable either as characters or as adversaries. Some can be fought; some can be fled . . . and with some, all you can do is scream, and scream, and scream.