Ania Sowinski

When an art dealer's wife is taken hostage at gunpoint, Luther leads a tense investigation. The hostage takers want payment in diamonds so, stalling for time, Luther substitutes a bag of replacement diamonds from the Serious Crime Unit's evidence safe. Luther and DCI Reed are on hand to arrest the gang members picking up the gems, but when everything starts to unravel Luther begins to suspect that even Reed has double-crossed him.

Further horrific discoveries are made at the London house where the Nazi dagger was found, and Stella goes to Poland to discover the truth about the murdered child.

The arrival of an anonymous package containing a Nazi SS dagger at CCHQ sparks an investigation into the unsolved murder of a young Jewish girl in London in 1945.