Black and White (Brian McKenna Series #5)

In a secluded New York City park, a double homicide draws two detectives named McKenna. One is a legend; the other, a brilliant young investigator. Together, they are entering a case that will grow more bizarre and more horrifying with each new piece of shocking evidence...

One of the victims was tied to a tree and slowly tortured to death. Veteran detective Tommy McKenna realizes that he has seen this killer's work before—eighteen years earlier...

Tommy will get a second crack at his killer. Brian McKenna gets to work with a legend. And both men are setting in motion an investigation that will take them to California, Arizona, a Costa Rican mountaintop, and all the way to the Far East. The two McKennas are on the trail of two human monsters who have been killing for two decades—and murder isn't even the worst of their crimes...

NY Times Book Review

Mahoney gives compulsive procedural buffs exactly what they crave.

Dan Mahoney was born and raised in New York City. After serving the Marine Corps in Vietnam, he joined the New York City Police Department, where he worked for twenty-five years before retiring as a captain. He is the author of four previous novels and lives in Levittown, New York.