The Ghoul from Galveston

Cassy and Zach don't even get a chance to relax before another pressing case fall into their laps.An eight year old little girl has been kidnapped. Cassy and Zach have to find her before the police do. Human police officers wouldn't be saviors to this little girl. They would be lunch.As if this wasn't enough. Xander, Zach's brother, plots against them still. His new plan to separate them hinges on an unreliable accomplice that Zach will never be able to resist.Can Cassy and Zach rescue a little ghoul and still outplay Xander? Or is this first case as true partners doomed to be their last?