Follow the trial of Metropolitan firearms officer Martyn Blake, who has been charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, has pleaded not guilty to murder.

In this first episode reporters Ross Ryan and Adina Campbell follow the trial's opening, with the prosecution arguing Martyn Blake's actions were "not reasonably justified or justifiable". And we hear of Martyn Blake's belief that "one or many" officers could be killed as the suspect attempted to escape at "any cost".

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who has been charged with the murder of Chris Kaba.

Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, has pleaded not guilty to murder.

In this series you'll hear arguments from both the prosecution and the defence, find out what crucial witnesses say as they step into the witness box and comb through all the crucial evidence that was heard in court.

Reporters Adina Campbell and Ross Ryan get a behind the scenes to look at how major criminal cases like this one play out, with the help of expert guests who reveal the inner workings and processes of crime and prosecution.