Creep from the Deep(1999)
(The tenth book in the Little Terrors series)
A novel by Jan Burchett and Sara Vogler
The resident ghosts of Little Frightley Manor are all children. When the new pool house is installed, the Nordic saline splash is filled with genuine fjord waters. The little ghosts and their human friend George are faced with a horrible horde of warlike Viking spooks.
Used availability for Jan Burchett's Creep from the Deep
January 1999 : UK Paperback