My Best Friend Is Invisible

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Title My Best Friend is Invisible
Author R.L. Stine
Country United States
Language English
Series Goosebumps
Genre(s) Horror novel, Children's novel
Publisher Scholastic
Released
Media type Print (Paperback)
Followed by Deep Trouble II

The 57th novel of R. L. Stine's Goosebumps series.

Spoiler warning: Plot and/or ending details follow.

[edit] Plot

Sammy has a 'friend' named Brent who is invisible. At first, it's all fun and games, until Brent's pranks become destructive and people begin blaming Sammy for everything. When Sammy's parents find out, they use a machine to reveal Brent--who is actually a human sent to Earth to stop aliens (Sammy and his family) from taking over...and was invisible so he wouldn't be seen by the enemy.