A Summoning of Souls — Leanna Renee Hieber

As the twentieth century dawns in NYC, the top-secret Ghost Precinct pursues justice beyond the earthly realm in this paranormal historical mystery series.

The ethereal denizens of New York owe a great debt to Eve Whitby, the young medium who leads an all-female team of spiritualists in the police department's Ghost Precinct. Without her efforts on behalf of the incorporeal, many souls would have been lost or damned by means both human and inhuman.

But now Eve faces an enemy determined to exorcise the city's ghostly population once and for all. Albert Prenze is supposed to be dead. Instead he is very much alive, having assumed the identity of his twin brother Alfred, and taken control of the family's dubiously acquired fortune. To achieve his vicious ends, Albert plots to twist Eve's abilities into his own psychic weapon -- a weapon that not only poses a threat to spirits but to everyone she cares for, including her beloved Detective Horowitz . . .