Necroscope is the title of a series of horror novels by British author Brian Lumley.
The term necroscope, as defined in the series, describes someone who can communicate with the dead (coined Deadspeak later in the series). Unlike necromancers, who here extract the knowledge they seek by brutal eviscerations of corpses, a necroscope can communicate with them as equals: peacefully and without any physical interference.
The abilities of a necroscope are defined as a type of ESP.
Harry Keogh (born Harry Snaith) is born with the ability to speak to the dead. As he grows up and his power manifests itself, he befriends the dead. From them he learns that death is not the end, that although the body dies – the mind goes on, and the dead continue to improve and expand in death what they loved in life. From him, the once silent Great Majority learns to communicate amongst themselves, and love him for it. In turn, they offer him their knowledge: while at school, a deceased math teacher helps him with his developing mathematics talent and an ex-army sergeant teacher imparts self-defense skills.
Necroscope is the first book in the Necroscope series by British writer Brian Lumley. It was released in 1986.
Harry is an English youth in school, and strange things occur as he grows up, such as a sudden increased intellect in mathematics, and the ability to fight beyond his experience after a teacher is killed. Eventually he marries his childhood sweetheart, Brenda, who slowly realizes there is more to her now-successful writer husband: that he can speak to the dead, whose collective consciousnesses remain behind, at the location of dying.
These dead can talk only to Harry at first, but eventually, they can "deadspeak" to each other. Coinciding with Harry's evolving abilities, Boris Dragosani is contacted by a long-chained vampire, Thibor Ferenczy. Boris gains the ability to become a necromancer, who can forcefully extract secrets from the dead by playing with their remains and even eating them.
Harry goes to visit his stepfather, who he knows killed his mother by drowning her in a river, and lives in a house at that river. Harry, realizing his stepfather is a Russian spy who plans to kill him for his talents, sabotages his stepfather, but both crash through the ice and fall into the frozen river. As he tries to get out, Harry discovers a new ability of the dead when his mother's corpse drags his stepfather down into the cold river, drowning him also.