With “Killing the SS: The Hunt for the Worst War Criminals in History,” Bill O’Reilly and Martin Dugard write a suspenseful tale focused on efforts to bring Nazi war criminals to justice.

The book specifically focuses on the post-war efforts to find, arrest and try Adolf Eichmann, “logistical villain behind the Holocaust,” Martin Boorman, Adolf Hitler’s personal secretary, Klaus Barbie, the “Butcher of Lyon,” and Josef Mengele, the Nazi doctor known as the “Angel of Death.”

In some cases, the Nazi hunters were successful in bringing Nazis to justice; in other cases, time and age meted out their justice in hiding; in others, death came with the close of the war.

“Killing the SS” is the latest in the O’Reilly-Dugard series of “Killing” books.

The books started with well-known deaths of individuals: “Killing Lincoln,” “Killing Kennedy,” “Killing Jesus.”

It has moved onto eras of history: “Killing the Rising Sun” about Japan at the end of World War II and “Killing England” about American independence from Britain.

The best volumes were the first three. “Killing Patton” and “Killing Reagan” were a little far-fetched for the series.

But “Killing the SS” is the best “Killing” book in about five years.

Like the other books, it is not afraid to delve into what some would consider controversial, possibly even conspiracy theory-motivated, subject matter.

“Killing the SS” is chilling and horrifying. It’s a reminder of how derogatory rhetoric and slurs turned into mass murder.

And for decades later, often unrepentant monster skulked the earth.