The second laugh-out-loud adventure in the Doctor Proctor's Fart Powder series from Jo Nesbo, the most successful Norwegian author of all time! The Fart Powder was such a successful invention that Doctor Proctor couldn't stop there. Next up: a Time-travel Bath Bomb. Throw the Bath Bomb in the tub, lather up and imagine where you'd like to visit. The battle of Waterloo? No problem. The French Revolution? Let's go! Doctor Proctor has plans for this new invention. Years ago he lost his true love, Juliette Margarine, and now he wants to change the past and win her back. But when his plan goes awry, it's up to Nilly and LIsa to travel in time and save the day. In the spirit of Roald Dahl and Lemony Snicket, Doctor Proctor offers a winning combination of humor, adventure, and absurdity that kids (of all ages) will love! PRAISE for the Doctor Proctor's Fart Powder series: 'This terrific book will make you laugh, and cherish your friends' - James Patterson 'plenty of toilet humour, and general silliness that kids love' - The Bookseller 'wickedly entertaining' - The Big Issue 'Lashings of silliness, quirkiness, self-deprecating humour, and a rollicking plot…' - TheBookbag.co.uk 'Fuelled by farts, this is fast-paced and a delightfully ridiculous adventure' - Julia Eccleshare review on lovereading4kids.co.uk 'A superb mix of bizarre and wacky with a little bit of off-beat thrown in. Reminiscent of Roald Dahl it has all the elements to keep children hooked...' - Waterstones