The Secret of Bosco Bay. Graphic Novel

Joe worked at the amusement park "Bosco Bay" and disappeared without a trace. Everyone believes he ran away from home. But his sister Jen knows that Mr. Peterson, the park's designer, is involved in her brother's disappearance! Together with her cousin Ellie, she plans to visit "Bosco Bay" to uncover the truth. What the girls certainly didn't expect was meeting Mr. Peterson and... encountering a ghost! How are they supposed to return home from the dilapidated park alive?!