Spirit Seeker by Joan Lowery Nixon

Holly's life is full of small stresses. The strain on her from her parents' marriage, school, friends, and just being a teenager.

Then Holly's father--a police detective--comes home to tell her Cody, her boyfriend, is a suspect in the murder of his parents.

Holly must race the clock in order to prove Cody's innocence--even though all the evidence points at him. And she needs to open herself up to the abilities she's tried to ignore.

Some paranormal aspects in the story. Holly is a sympathetic character, and although a lot of the situations need a heavy suspension of disbelief, the action, mystery, and solution are well done. The reader is left questioning Cody's guilt and Holly's belief right to the end.