Come along down, Sir. Step this way. Only a shilling, Sir, to view the changeling child. Only a shilling to behold the strangest work of nature that ever was. Come Sir, follow me down . . .In the basement a gap is forming. Mysterious voices are calling, and Tom cannot resist. Taking a leap through time Tom meets Astra, the changeling child; the incredible bendy man, and the gorilla woman -"monsters"being shown at Bartholomew Fair . In the dark and seedy backstreets ofeighteenth-century London, doctors are paying high prices for unusual bodies to dissect, and Astra and her friends are prime targets. They desperately need Tom's help. But Tom has problems of his own . . .Come, sir. Follow Me Down ...