Nixon, Joan Lowery. <br/><br/>
The dark and deadly pool / 
Joan Lowery Nixon. 
 - New York :  Dell,  1992, c1987. 
 - 179 p. ;  18 cm. 
 - Laurel-leaf books. .
<br/><br/> Sixteen-year-old Mary Elizabeth's summer job at an expensive health club turns out to be more exciting than she bargained for when a series of mysterious events culminate in murder. 
<br/><br/><label>ISBN: </label>0440203481