Shauna. Charlotte. Mildred. Three schoolgirl sleuths. Jack. Linton. Sonny. Three schoolboy investigators. Tackleford. One mid-sized city with a history of countless mysteries. Is there enough room at Griswalds Grammar School for two groups of kid detectives? There better be, because once these kids have set their sights on solving a mystery there's nothing that can derail them. Nothing, except maybe gossip, classwork, new football player cards, torment...

The Tackleford gang is back with a new case that demands solving! When Tackleford's derelict barns begin going up in flames, Linton and Sonny are on the case with a moderately mysterious new friend. Paths cross, however, when Lottie and Mildred meet a terrifying yet misunderstood creature living beneath a bridge! Throw in an overly enthusiastic Fire Brigade, a transforming skate ramp, and a new French teacher and you've got the kind of charming genius...

The new year brings the all the joys and near-drownings of young love in The Case of the Fire Inside, the latest volume of Bad Machinery! Sonny meets a mysterious new girl who seems to have climbed out of the sea itself, while Mildred falls for the bad boy of Saturday detention. But can either of them succeed in the face of jealous exes, overprotective fathers, and the persistent tide of destiny? What is a "selkie"? Is a Morton's toe fatal? And can...

Time is a fickle creature, especially when there's wormhole in the science cupboard. When a strange boy who seems far too entranced by cell phones appears, it's up to Lottie, Shauna, and Mildred to figure out his strange purposes. The Case of the Forked Road, the seventh book in John Allison's award-winning Bad Machinery series, finds our young sleuths facing the intricacies of time and space itself. What is their science teacher hiding? Who is the...

From the bestselling author of Giant Days comes the latest pocket-sized volume in his beloved Bad Machinery series! It's that classic feud: mods versus rockers! As the boys get caught up in the allure of mod culture (the scooters! the hair! the fashion!), Shauna is testing her mettle as the queen of metal. But when the new King of the Mods is crowned, he sparks an all-out war between the musical factions, with the mystery team caught in the mix! The...

From the bestselling author of Giant Days comes the final pocket-sized volume in his beloved Bad Machinery series! The mystery-solving teens of Tackleford are finding out that not every summer is a perfect one. Charlotte and Shauna, once inseparable, are decidedly on the outs. Mildred bounces between the formerly best friends while trying to save up money for a car. Amy's rent at the antique store gets tripled, casting doubt on the future of her...