Goosebumps 22 - Ghost Beach

The Sadler siblings, Terri and Jerry, are sent by their parents to spend a month on the beachfront with their distant cousins Brad and Agatha Sadler, an elderly but lovable eccentric couple. In the course of fooling around on the beachfront, the siblings meet a trio of young kids flying bat-shaped kites. The five children set out to stop a horrible ghost from terrorizing their beach town.