R. L. Stine
Book 61 of Goosebumps
Language: English
Amazon Google Books ISBN
Children's Books.3-5
Publisher: Scholastic
Published: Jan 2, 1997
Description:
When Marco gets hit by a bat while playing baseball, he begins to hear a voice that identifies itself as Keith, a resident of Marco's basement, who turns out to be a slimy monster. Original.