Mariusz Wesierski

A boy haunted by visions of a parallel world aids its disillusioned guardian in preventing the destruction of the nexus of universes known as the Dark Tower.

England, 1021. Rob Cole, a boy born in a miserable mining town, swears to become a physician and vanquish disease and death. His harsh path of many years, a quest for knowledge besieged by countless challenges and sacrifices, leads him to the remote Isfahan, in Persia, where he meets Ibn Sina, the greatest healer of his time.