Boyd and the team uncover a link between a tragic war crime and a massive drugs deal.

A road accident provides a DNA link to a murder committed in Srebrenica during the Balkan War.

Boyd investigates the links between a group of men, all of whom knew the murder victim.

There are disturbing ritual connections to an unearthed corpse, discovered in disused tunnels, originally built by road protestors in the 1990s.

Boyd and the team have to uncover the awful truth behind the murder of a neo-Nazi in order to save a young boy's life.

The cold case squad find a dead neo-Nazi hidden in an air conditioner duct of an empty car park, but soon uncover some far-reaching links in the case.

An Iraqi woman proves the key to the unlocking of the case.

The accidental excavation of a human hand leads the cold case squad to the cover-up of a major incident.

The shocking truth about the headless corpse is revealed as Boyd races against the clock to discover the whereabouts of a kidnap victim.

The team's investigations lead them to a group of ex-cons after the discovery of a human head.

As the truth comes out about Lore Dutana, the team must dig even deeper if they are to save her children from an ex-IRA terrorist seeking revenge.

When a woman defends her daughter from a mugger, it sets into motion a chain of events that places herself and her children in mortal danger.