Lake monster mix-up

Description:

"Sam and her best friends, ten-year-olds Jennie and Beth, are going on vacation. Sagawa Lake seems pretty dull at first. But when the girls find an old diary, Sam is quickly on the scent of a new mystery. What is glowing underwater? Why are there webbed footprints on the beach? Who knows the secret of Sagawa Lake?"--Page 4 of cover.

subjects: Sam (Fictitious character : Labatt),  Chiens,  Juvenile fiction,  Graphic novels,  Monsters,  Mystery and detective stories,  Sami (Personnage fictif : Labatt),  Romans graphiques,  Human-animal relationships,  Dogs,  Comic books, strips,  Bandes dessine es,  Detective and mystery stories,  Detective and mystery comic books, strips