Cold kill

"The Christmas season in Minneapolis is shattered when two friends, Chuck Spencer and Wally Luntz, scheduled to meet in person for the first time, are murdered on the same night, two hours and several miles apart, dramatically concluding the winter vacation for homicide detectives Leo Magozzi and Gino Rolseth. This series of inexplicable events sends the detectives sixty years into the past to search for answers - and straight to Grace MacBride's Monkeewrench. What they find is an unimaginable horror - a dormant Armageddon that might be activated at any moment unless Grace, along with Leo and Gino, can find a way to stop it."