More clues and even more mystery: the secret to Ava's Will is still out there, and Ruby is hot on the trail. After a long, scary night searching for more clues in O'Deary library, Ruby and Hailey have learned at least one thing: the library is definitely haunted! Pursued by shadowy figures, floating books and creepy noises, the two sisters are seriously freaked out! Luckily, their spooky night wasn't a waste: more clues have led them to Ava's email address and to their surprise, the ghost of Ava answers their email, bringing them several steps closer to the Will. Ruby is hot on the trail of the Will. But she'll find herself making a hard choices– and seeking help from an unexpected source.