Airman / Colfer, Eoin

In the late nineteenth century, when Conor Broekhart discovers a conspiracy to overthrow the king, he is branded a traitor, imprisoned, and forced to mine for diamonds under brutal conditions while he plans a daring escape from Little Saltee prison by way of a flying machine that he must design, build, and, hardest of all, trust to carry him to safety.

In the 1890s on an island off the Irish coast, Conor Broekhart is falsely imprisoned and passes the solitary months by scratching designs of flying machines into the walls, including one for a glider with which he dreams of escape.