You know only you could stop this madman with the book of the beast so you decide to try to find him or her and get the book back. But you knew that you couldnt walk into a bank as a 5 yr old who looked like she was playing dress up, so you decide to transform yourself back.
You say the magic word and say age 15 years and next thing you know you are back to being a 20 year old girl. You quickly grab better suited clothes and put them on and head towards the bank and start there.
It takes you 10 minutes to get to the bank and the cops are still there trying to figure out what the hell happened. You could also see that they are still carrying cages of the victims who are now animals out of the bank. Some of them turned into cats, dogs, birds, racoons, etc.
Thats when..