Australia, detectives Ian Kennedy and Kevin Raue hunt down five very nasty guys for the rape and murder of an innocent. And in Los Angeles, FBI Special Agents Louis Perez and Jim Davidson need to stop four deadly Russian immigrants who've set out on a kidnapping and killing frenzy.

In Ohio, Toledo detectives Tom Ross and Bill Adams bring down a pair of brothers that terrorize a city by raping and killing young couples. And in Florida, investigators Phil Redstone and Tom White hunt cousin that impersonate cops as they capture, rape and kill. Bad blood indeed!

In Georgia, Detectives Bob Ingram and Welcome Harris chase a roving hit man across several states, then chase the millionaire that hired the hit across the globe. And in Arkansas, FBI Special Agents Richard O'Connell and John Kingston hunt down a gang of triggermen - and the coke-snorting con men that hire them.

In Italy, Allesandro Tornabene and Luciano Garofan of the elite Carabiniere Police Force bust a pair of star-crossed lovers that butcher an innocent family. And in America's west, Detectives Verlin Denton and Bill Summers join forces to take down a vicious couple that kidnap, rape and kill their sex slaves.

In Alabama, Detective Kent Quinnie and Michael Shavers bust a preacher that uses verses in the good book to justify killing and deep-freezing his wife. And in Kansas, Detectives Dan Owsley and Dave Brown use every trick in the book to chase down and bust the Internets first, and most prolific, serial killer.

In Detroit, Lieutenant Patrick McGreevy and Chief Joseph Price hunt a twisted killer that draws his victims close, then slices their bellies wide open. And near Boston, Veterans Affairs Special Agent Steve Plante teams up with Northampton's Detective Kevin Murphy to corner and collar a serial murderess - one that kills... with a syringe.