Sandy's Dream

A dream comes true in the fictional book Sandy's Dream (The Multiverse). The story is about a teenage girl. She regularly had odd nightmares involving unbelievable events. The girl's name is Sandy. The purpose of this book is to amuse the readers. This book is jam-packed with suspense, mystery, fantasy, and science fiction.
Sandy used to have nightmares all the time. In that, someone was always looking for her to kill. He was what Sandy pictured as her perfect enemy. In the same dreams, Sandy encountered a second guy who would protect her from the first. As a result, he turned into Sandy's ideal hero. She learns a lot of new information through her dreams about parallel realms and the multiverse. Sandy, Lucy, Dr. Richard, Marty, and James, are the key characters.
Sandy assisted Marty in finding James despite having no knowledge of it.
Without Lucy, Dr. Richard cannot discover the truth about Marty and the serial killer.
Without Dr. Richard, Sandy would not be aware of the reality of her ideal hero.
Dr. Richard is unable to find any hints without Multiverse treatment.
There were several questions running through the reader's mind.
How can dreams come true in real life?
In our dreams, who is behind the lens?
Do brains have the ability to display images?
Do souls travel across a great distance in light years?
How does the parallel universe relate to dreams?