After many successful years at sea, Jacob Fletcher is finally pursuing his career in trade.

Through his new acquaintance, Sir David Bayley, and his grandson, Arthur, Fletcher becomes fascinated by a new form of aerial navigation.

It isn’t long, however, before he is persuaded back to the sea on a new commission, given promotion to commodore, and sent to protect Ireland from the French. Thus naval battles, Irish uprisings and rebellion, and unscrupulous methods lead to Fletcher questioning his own morals – and reckless actions could be costly!

His adventures take an even more dangerous turn as he is forced into the Baltic on a rescue mission. Despite warnings from friends, and with dangerous enemies in high places, Fletcher attempts to complete a mission where others have failed. Now he must use all his knowledge, improvisation, and the skills of his newest midshipman, to survive.

From naval battles to Baltic castles, this seventh book in the Fletcher series is filled with adventure and humour.