ISBN-13: 9780099514183 / Angielski / Miękka / 2008 / 320 str.
Following a contretemps with Colonel Wyvern, what could be better than a sojourn at Healthward Ho? Quite a lot, as it turns out, when Lester Carmody of Rudge Hall puts himself into the hands of Dr Twist, the aptly named owner of the establishment, and pursues a devious money-making scheme.