Series 2

How the senseless murder of a pensioner was finally solved, thanks to DNA preserved in her clutched hand. And a sister's fight for justice in the UK's oldest case of double jeopardy.

The Flying Squad hunt for a brazen gang stealing jewellery and cash across the UK. And a daring heist of valuable rare books sets police off on an international manhunt.

How CCTV of a change of tracksuit unlocked the truth about the senseless murder of a loved son. And South Wales Police disrupt a huge drugs gang.

The search for a vulnerable young woman unravels a tragic case of neglect and murder. And police investigating the murder of a popular teen find the key suspects very close to home.

Police are staggered by a thief with many disguises who goes on to confess far more than they could imagine. And how the net closed in on a gang stealing sentimental jewellery.

When police arrive at a fatal collision, they must establish if its an accident or deadly driving. And officers in Durham deal with the tragic aftermath of a drunk driver.

How the online brags of a drugs gang exploiting teens led to their downfall. And when a brave victim reports historic sex abuse, a determined detective fights for justice.

A van driver calls 999 after making a horrific discovery and police must determine if he’s telling the truth or covering a terrible crime. Plus the hunt to catch a right-wing extremist.

A criminal gang making millions selling fake cigarettes are caught hiding their stash in secret drawers. And the drugs courier busted with £200,000 he claimed he had won on the slots.

A gang illegally digging up roads to divert electricity to power dozens of cannabis farms was caught, plus a shoddy builder takes £35,000 from an unwitting victim.