Susan Koehler 
Cursed [PDF ebook] 

Eli Hancock is all about facts and scoffs at his friend Freddy’s superstitions. But after the pair find a gold coin in a sinkhole at Broken Brand Ranch and good things start happening to Eli, he thinks it might be lucky. He returns to the ranch and takes an old pocket watch. What’s a little more luck? Then, the coin begins to glow and his dreams turn haunted. Are the coin and pocket watch he found actually cursed?