A Basque terrorist, an Algerian revolutionary, and a ruthless IRA agent are the keys to solving a cold case.

Reoorrists from Ireland, Algiria, and Basque country help Boyd and his team solve a case.

The head warden of a prison for sexual predators, who was decapitated years before, is discovered and there is no shortage of perverted and kinky suspects.

When Sociopathic-sadistic serial killer convict Kelleher, who is dying of cancer, escapes from prison, he takes prison psychiatrist Dr. Hooper with him for unclear reasons.

A mummified hand is discovered in the woods and linked to a military academy in the area that trains mercenaries to fight in Iraq.

After a witness in Boyd's ongoing murder investigation is killed by a sniper, the team scrambles to work through the remaining suspects before anyone else suffers the same fate.

The dessicated, mummified body of a young man who was a member of a racist skinhead organization is found in ventilation shaft where he was murdered in 1990.

Boyd and his team find themselves in a race against time as they pursue racist skinhead Jim Brown and his young hostage in order to find out who murdered Sam seventeen years earlier.

The team discovers that the death of one of the group's members in 1995 and subsequent deaths can be attributed to a Navajo sweat lodge ritual attended by all the principles.

The bodies of a mother and son are found in a mass grave in Bosnia, but evidence shows the boy was not Bosnian although his mother was.

The team discovers that even though the war crimes occurred a decade earlier the deaths they're investigating are intertwined with s current drug deal.