Riddle of the Gods is the riveting fourth novel in the best-selling series chronicling the life and adventures of one of Norway’s most controversial kings, Olaf Tryggvason. It is AD 976.

Olaf Tryggvason, the renegade prince of Norway, has lost his beloved wife to a tragedy that turns the lords of the land he rules against him. With his family gone and his future uncertain, Olaf leaves his realm and embarks on a decades-long quest to discover his course in life.

Though his journey brings him power and wealth, it is not until he encounters the strange man in the streets of Dublin that his path to fame unfolds. And in that moment, he is forced to make a choice as the gods look on – one that could either destroy him or ensure his name lives on forever.

Praise for Riddle of the Gods:"Schumacher delivers a compelling tale of loyalty and betrayal, and love and loss, in which Christianity vies against the old pagan ways as surely as the warriors battle for power and fame. Another great Viking novel from Schumacher.

" – Matthew Harffy, historical fiction author"If you want to experience the Viking Age as it really must have felt, then read this book. I know of few novelists who can transport you there with greater skill and accuracy than Eric Schumacher.

A gripping, intelligent novel of the Viking world. " – Theodore Brun, historical fiction author"Full of rousing battles and journeys over land and sea, Riddle of the Gods sees the protagonists strained and broken in ways not encountered in the earlier volumes.

" – Rowdy Geirsson, Viking author"A truly well-written book which has the reader gripped and yearning for more. " – Stacy Townend, historical fiction author.