Everything under

"Gretel grew up on a houseboat with her mother wandering the canals and speaking a private language of their own invention until the day she disappeared and abandoned Gretel to foster care. Now a lexicographer Gretel has tried to move on but an unexpected phone call brings the past rushing back. To find her mother Gretel must face buried memories of a fateful winter when they sheltered a runaway boy and were stalked by an ominous creature lurking in the water." -Back cover.