1808. Parted from his new bride, Captain Sir Thomas Kydd is called away to join the Northern Expedition to Sweden, now Britain's only ally in the Baltic. Following the sudden declaration of war by Russia and with the consequent threat of the czar's great fleet in St Petersburg, the expedition must defend Britain's dearly-won freedom in those waters. However Kydd finds his popular fame as a frigate captain is a poisoned chalice; in the face of jealousy and envy from his fellow captains, the distrust of the commander-in-chief and the betrayal of friendship by a former brother-in-arms now made his subordinate, can he redeem his reputation? In an entirely hostile sea Tyger ranges from the frozen north to the deadly confines of the Danish Sound - and plays a pivotal role in the situation ensuing after the czar's sudden attack on Finland. This climaxes in the first clash of fleets between Great Britain and Russia in history. To the victor will be the prize of the Baltic!