After their recent adventures, the Lockwood & Co team deserve a well-earned break, so naturally they decide to risk their lives breaking into a heavily-guarded crypt.
A building full of unsettled souls, it's also the final resting place of Marissa Fittes, the legendary and (supposedly) long dead ghost hunter.
What they discover their will change everything.So begins a race to get to the truth behind 'the Problem', and an epic struggle against the Fittes agency.
A struggle that will pit the team against the most terrifying enemy they have ever faced.
Not even the dead will survive unscathed.