Jonah is a college senior who can't seem to score an internship, so she's returned to the summer job that she's had every year since she was old enough to work: lifeguarding at the run down waterpark on the outskirts of her small town. Things take a turn for the worse when a dismembered body is discovered in the lake that feeds the park's attractions, and the whole staff becomes convinced that they are the murderer's next target.

[participant in the Royal Road Writathon challenge] 

(this story is complete as of 12/3/19, though no promises I won't make edits at some point lol)