The whole book of One Day for Love didn't get posted, so I will try it again later.

Cass' life is changed when a real estate agent drops off a mysterious box at Cass' grandfathers' house, along with the news that a magician had died. She then meets Max Ernest, a boy who talks way too much, and they decide to investigate the magician's house. They are caught by a seemingly young couple and run away, but not before discovering a mysterious journal. The young couple comes to their school to look for the two kids, but end up kidnapping a synesthete (getting your senses mixed up in your heAD) boy named Benjamin Blake. Cass sees the name on their truck as they drive away, THE MIDNIGHT SUN. Cass disquises herself as a celebrity to save the boy. Will the Midnight Sun discover her true identity? What secrets does the Midnight Sun hold? 

You'll have to read it to find out.