"With the help of some unexpected, and rather ghostly, allies, Lockwood & Co. must battle their greatest enemy yet, as they move ever closer to the moment when the earth-shattering secret of 'the problem' will finally be revealed"--

"After returning home from a treacherous adventure, Stone Barrington is all too happy to settle back down in his New York City abode. But when he's introduced to a glamorous socialite with a staggering inheritance, Stone realizes his days are about to be anything but quiet. As it turns out, Stone's intriguing new companion has some surprisingly familiar ties and other far more sinister ones--including a nefarious enemy who gets too close for comfort....