Profligate London, 1788. Slave ships haunt the seas, bearing human cargos to further the wealth of the rich and destroy the souls of the slave traffickers.

Russell Lawrence is an avid skeptic. Captain of the slave ship Barbados, wealthy, and a respected leader, he views religion as a crutch for the weak. But when the debauchery of the slave trade begins to destroy his good morals, his battle becomes more than fighting pirates and mutineers. What if there really is a God?

Impressed as a cabin boy, Jack Dunbar sees his forced service on the Barbados as a God-given opportunity to witness Christ to the crew. But his efforts to influence the hardened slavers seems to be doing little good. How is it possible to live as a Christian on the sin-ravaged seas? Can his light shine bright in Africa's dark interior?

Back in Grosvenor Square, Elizabeth Grey battles opposition from society and her self-seeking fiancé. Her work with John Newton to end the slave trade is being harshly attacked. She faces life branded as a jilter and radical if she stands up for what she believes in. Will she ever glean the strength to call sin by its rightful name?

A tale of adventure on the high seas, redemption, and faith. Sin abounds. Is grace enough to conquer doubt and triumph over evil?