R.L. Stine 
Haunted Mask [EPUB ebook] 

They’re baa-ack! Make way for the bestselling children’s series of all time! With a fresh new look, GOOSEBUMPS is set to scare a whole new generation of kids. So reader beware–you’re in for a scare! Carly Beth thinks she’s found the best Halloween mask ever. With yellow-green skin and long animal fangs, the mask terrifies the entire neighbourhood. Before long, it has a surprising effect on Carly Beth, too. She tries to take it off . . . but it won’t budge! Halloween is almost over, but fright night is just beginning.