Storm Riders — Jennifer Cloud

A police officer takes on a case that begins in domestic violence, taking an ugly turn into murder with the young woman being the prime suspect. He knows she is hiding something.

A missing person case follows when the young lady, who has become the prime suspect in a murder, is taken from a hospital where she is believed to be criminally insane.

The logical thinking officer finds he has to deal with the supernatural in order to unravel the mystery. His quest takes him to another world floating above our own. He can only hope to save the girl and somehow prove her innocence.