Stupidity Killed the Cat, Curiosity was Framed.

C.C. was highly upset. His kitten plush had been destroyed by Wheatley and no one believed him. He wasn't exactly gentle with his toys anyways, but Curi was his absolutely most favoritest plush! He would hurt it ever. He wiped the synthetic tears from his face and plotted revenge.

* * Later * *

Wheatley was hanging from the ceiling by a claw. C.C. had completely trashed his room and left no evidence. The brat had done it while GLaDOS was down in Old Aperture and had altered the security tapes, somehow. He probably shouldn't have destroyed the kitten plush.

AKA The Moron destroyed the kitten plush, C.C. was framed.

He was able to fool GLaDOS for two reasons. 1: GLaDOS still doesn't give Wheatley the benefit of the doubt and 2: C.C. knows how to perfectly modify the security tapes due to his time connected to GLaDOS.

GLaDOS was in Old Aperture due to the fact that she needed to check out something in person and left Morality, who doesn't really like Wheatley, in charge.