Doc Savage Double Novel #27

"What is the strange connection between a snowstorm in July and the death of a woman transformed into a shadow? Doc and Pat Savage travel to Syria to uncreal the strange secret of the 'Murder Mirage.' Then, a mysterious animal pelt leads Doc through a crack in the Earth to the prehistoric dangers of 'The Other World.' Pulp historian Will Murray provides historical context and a tribut to the late Doc Savage writer Philip José Farmer."