Haddix, Margaret Peterson. <br/><br/>
The House on the Gulf. 

 - 1st ed. 
 - New York :  Aladdin Paperbacks,  2006. 
 - 201 p. 
<br/><br/> A sixteen-year-old boy arranges a house-sitting job for the summer, but he starts acting strangely after his family moves in, and his sister begins to suspect they are not supposed to be here. 
<br/><br/><label>ISBN: </label>1416914064 (pbk.) :  $5.99 
<br/><br/><label>Subjects--Topical Terms: </label><br/>House-sitting--Fiction<br/>Grandparents--Fiction<br/>Mystery and detective stories<br/>Florida--Fiction