Two hyenas from Africa find a pair of passports (memo: do not go swimming in a crocodile pool), and move to Teddington, England, where they live suburban lives, hold jobs, and raise their children to hide their tails and act human--the only trouble is old Mr. McNumpty, their nosy neighbor, who is hiding a secret of his own.

When Will Burrows and his friend Chester embark on a quest to find Will's archaeologist father, who has inexplicably disappeared, they are led to a labyrinthine world underneath London, full of sinister inhabitants with evil intentions toward "Topsoilers" like Will and his father.

Boy archaeologist Will Burrows wanders the caverns beneath the Colony with his best friend Chester and brother Cal, falls upon the Styx's plan to get rid of Topsoilers with a deadly plague, and risks his life to foil their plot while wondering if his killer stepsister is still on the loose.

A terrible disease has struck everyone sixteen and over, leaving them either dead or a decomposing, flesh-eating creature. The action starts in a boarding school just outside London, where all the teachers have turned into sickos. A few kids survive and travel by bus into the city. The bus driver, an adult named Greg, seems to be unaffected by the disease. Then he begins to show the dreaded signs: outer blisters and inner madness. The kids escape...

"Shane has been doing college all wrong. P re-med, stellar grades, and happy parents...sounds ideal -- but Shane's made zero friends, goes home every weekend, and romance...what's that? Her life has been dorm, dining hall, class, repeat. Time's a ticking, and she needs a change -- there's nothing like moving to a new country to really mix things up. Shane signs up for a semester abroad in London. She's going to right all her college mistakes: make...

When Maisy and her friends visit London, they go on a whirlwind tour of the city on a double-decker bus, a water taxi, and an underground train.