Mystery time?

Meet Trinity, she is a young girl that just moved to a place called Gravity falls. She makes a lot of new friend while she's there. Soon she meets a pretty interesting guy, he was the same age as her, with brown hair and eyes, but something got her attention....he was trying to solve the Mysteries in this town, a lot of abnormal activity. He asked her if she wanted to join him in the investigations, ofcourse she said yes, mainly because who would turn down an opportunity like this?!? But there's a catch, she has....a secret, a pretty dark one, it could change her relationship with everyone, forever.
Wanna know what it is? Like every mystery here, just read to find out.