In Carl We Trust Carl² : Season 4 Episode 10
TV-Y7 Télétoon 22m
Aired: January 2nd, 2011 @ 12:00 AM EST on Télétoon
Mr. Agar becomes principal and for some reason he knows about all the bad stuff the students are doing. Everyone blames Carl. Later it is revealed Mr. Agar put a listening device inside Carl's MP3 and that's how he knew everything.
