Two master criminals are on the run with ancient treasure, using London's web of hidden trails and passages to conceal their loot. The Adventurers must track them down using their wits, Uncle Logan... and a stolen red bus. Join Lara, Rufus, Tom, Daisy and Barney as they race to uncover the City of Secrets! " Their subsequent mad dash around London is marvellously entertaining, as they follow clues, decipher codes, and descend into the belly of the city. Readers will be delighted to find them exploring disused tube lines under Charing Cross Station, popping out of a manhole in Trafalgar Square, and commandeering a bus from the London Transport Museum, in their headlong pursuit of the culprits." Kirstin, Bookstoker "A fun, action-packed chase through the city of London. Trust me, the twists and turns are fast and twisty as The Adventurers discover secret after secret" Bookfrolic.com "I enjoyed this every bit as much as the previous two... the stolen bus is an absolute highlight" World of Blyton