David M. Drury

While Jenkins discovers there's something wrong with the Library since it returned from the Void, the Librarians all find themselves drawn back together after having been off on their own for months, to solve the mystery of a massive storm that has parked itself over Manhattan. They soon discover the culprit in both cases is none other than Shakespeare's Prospero.

A rash of people spontaneously combusting leads the Librarians to a holistic spa run by vampires, who have discovered the secret to walking in the sun.

It's a story we've seen a million times: a lonely house, teenagers killed by a nameless monster, a single bloody girl escapes and runs into the woods. But this time the girl runs straight into the Librarians. The Librarians have come to this dark wood to hunt down fractured ley lines, magical energies cut loose by the events of the attack on the Library. What they find is a Haunted House which proves deadlier than anything they've encountered so far. The Librarians have until midnight to unravel the mysteries of the House and escape, before it consumes them and then moves on to claim new victims. Cassandra finds herself sidelined as the team-member least equipped for violence, and resents it. But as the others pull apart the legend of the place, Cassandra is the one who pieces together the secret, unbelievable mystery behind the true monster of the House of Mystery.