Board Thread:False Info and Speculative Discussion/@comment-24.130.28.230-20150701151419/@comment-65.93.139.213-20150701171955

It made sense though...

The signatures were clearly different. The point is, the writers were trying to make it look like Stile's was too suspicious, which is why Scott, Kira and Malia didn't find it a big deal, like you.

Scott: Why don't you trust anyone?

Stiles: Cause you trust everyone!

But it turns out that Stile's radical suspicion was actually right. Theo, for whatever reason, had some guy force his real parent's signature, and then proceeded to smash that guy's hand with a hammer in order to justify the difference, since he knows that Stiles is on to him.