The Snape Ring - Jake Conley, #4

Something mysterious and scary is loose in the British Museum, and a rapid solution is needed. Something connects the events to malevolent forces that menaces realms beyond our own...and all mankind. Only one man has the power to defeat this fearsome threat, so the Ministry of Defence engages psychic investigator Jake Conley to solve the mystery. Soon after, he discovers disturbing connections to the case, including murder.
Can Jake overcome his diabolical adversary and save the day?