Space tourism isn't dangerous. It's the passengers. Psychologist Maddie Swallows had always thought of space tourism as science fiction. That was before the phone call that turned her world upside down and she was hired to work with celebrity passengers as they prepared for their once-in-a-lifetime flight. It was her dream job. Until six passengers went up into space, and two hours later, only five returned. If you don't count the dead body. Investigating a murder hadn't been in the job description, but Maddie now needs to use her psychological training to discover who of the remaining five passengers is a murderer. Before they strike again.