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

Back in London, fifteen-year-old twins Sophie and Josh Newman must determine whom they can and cannot trust as they search for both Scatty and an immortal who can teach Josh the magic of fire, while Doctor Dee and Machiavelli continue to seek power.

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.

Excitedly visiting London during a class trip despite being under the watchful eye of his bad-tempered principal, Rafe is horrified when bully Miller the Killer is assigned to be his roommate, and Rafe's unavailable crush, Jeanne, becomes his partner for a project.

Cass and her brother Wilbur scavenge in the ruins of a future London seeking an artifact for their Russian masters, but the search takes on a new urgency after the arrival of Erin and Peyto, strangers from afar who claim to hold the key to locating the mysterious object.

Xena and Xander Holmes, an American brother and sister living in London, use clues from their ancestor Sherlock Holmes' casebook to help classmate Alice Banders, who goes missing following the announcement that she will be crowned queen of Borogovia after her thirteenth birthday.

"A young boy, his great-uncle, and a friendly gorilla from the London Zoo uncover a Nazi plot in wartime Britain"--