To prepare for the role of Solomon Kane, James Purefoy read the entire oeuvre of Robert E. Howard as well as researching extensively the lifestyle and attitudes of Puritans.
One of the unforeseen problems the production encountered in shooting night-time scenes on location in the Czech Republic was the constant hooting of owls.
Director M.J. Bassett and the film's producers intended to make two further Solomon Kane movies to complete a planned trilogy, one set primarily in Africa and the other at least partially in colonial North America.
For a lot of the fight sequences, director M.J. Bassett would play heavy metal to amp up her actors.
(at around 21 mins) When Kane says that he sailed with Admiral Drake, he's referring to the poem "The One Black Stain" by creator Robert E. Howard. In the poem, Kane speaks out against Drake's execution of Sir Thomas Doughty in 1578 Patagonia, South America, hence why Kane says "That didn't end well."