The dark deeps

Modo - teenage spy and temporary shape-shifter - is plunged once more into the world of international espionage. This time he's on the trail of a mysterious underwater creature - and he's not alone. Mr Socrates orders Modo and his beautiful fellow agent Octavia Milkweed to investigate the disappearance of the Permanent Association's New York agent.

From there, they follow a trail of clues that will lead Modo to an ingenious machine known only as the Ictineo, and a fabled underwater city ruled by pirates.

There, Modo confronts Colette, a French agent with secrets of her own.

Is she friend or foe? Meanwhile, on his secret island, Dr Hyde has been conducting a new and hideous experiment.

When Miss Hakkandottir, Modo's nemesis from the Clockwork Guild, arrives to hijack the Ictineo, Modo must use all his ingenuity to track down an unseen force ...even if it means revealing his true self.