Renoir 
The Sailors of Svalgsay [EPUB ebook] 
The Sixth Book of Dubious Magic

Warriors have traversed the sea passage between the Shetland Islands and Norway from the Vikings to World War 2 and beyond. On both shores there have been death and intrigue. Unlikely wizard John B. Stewart and his beloved Q discover that hasn’t changed. What they find is murder, mysticism, and an unexpected old mate.

The most powerful ancient talisman in the world is being used in a bizarre quest to correct history. But when the violence strikes too close to home John B. must pit his dubious magic against guns, bombs, and the old magic of the Norsemen.