Follows three young operatives of a Psychic Detection Agency as they battle an epidemic of ghosts in London.

"Lockwood & Co. are hired to investigate Edmund Bickerstaff, a Victorian doctor who reportedly tried to communicate with the dead, while Lucy is distracted by urgent whispers coming from the skull in a ghost jar"--

The lives of four misfits are intertwined when a bully's prank lands shy Virgil at the bottom of a well and Valencia, Kaori, and Gen band together in an epic quest to find and rescue him.

"Sophie Foster is on the run--but at least she's not alone. Her closest friends from the Lost Cities have gone with her to join the Black Swan. they still have doubts about he shadowy organization, but the only way to find answers is to start working with them. As they settle into their new lives, they uncover secrets far bigger than anything they'd imagined. But their enemies are far from done, unleashing a terrifying plague that threatens the safety...

Sophie Foster is back in the Lost Cities--but the Lost Cities have changed. The threat of war hangs heavy over her glittering world. And the Neverseen are wreaking havoc wherever they can. The lines between friend and enemy have also blurred, and Sophie is unsure exactly whom she can trust. But when she's warned that the people she loves most will be the next victims, she knows she has to act. A mysterious symbol could be the key--if only she knew...

After leaving Lockwood & Co. at the end of The Hollow Boy, Lucy is a freelance operative, hiring herself out to agencies that value her ever-improving skills. One day she is pleasantly surprised by a visit from Lockwood, who tells her he needs a good Listener for a tough assignment. Penelope Fittes, the leader of the giant Fittes Agency wants them--and only them--to locate and remove the Source for the legendary Brixton Cannibal. They succeed in their...