The Singers Of The Blood Knights

Althea has lost both of her parents. Her mom died a year ago from drunk driving and over dosage of sleeping drugs. Her father disappeared seven years ago. Althea now lives on her own. She attends school and she works at a near backstage concert hall. Her days are all the same wake up for school, go to school, go to work.
Until she sees a group of boys that she recognizes for a famous group of singers called The Blood Knights. A group of 3 boys that she heard on the radio a few times before and she Loved their singing. Her two best friends also like The Blood Knights they apparently got 3 tickets to the concert for the last day of school. Althea also finds out that she gets a new next door neighbor or should that be 3? But when she some how takes the wrong hallway she meets them and notices something strange about them. Who are they really? Also why are they so protective of her?