A public inquiry into how a woman from Wiltshire was killed after being exposed to the Russian nerve agent novichok is under way.
Dawn Sturgess, 44, died after being exposed to the chemical which was left in a discarded designer perfume bottle in Amesbury in July 2018.
It followed the attempted murder of former spy Sergei Skripal, his daughter Yulia and then police officer Nick Bailey, who were poisoned in nearby Salisbury in March that year.
All three survived, as did Ms Sturgess's boyfriend Charlie Rowley, who had unwittingly given her the perfume bottle containing the nerve agent.
An international arrest warrant was issued for three Russian men thought to be involved in the attacks, but as the Russian constitution does not allow the extradition of its citizens it is unlikely they will ever stand trial.
What can we expect from the inquiry?
The inquiry will examine the circumstances leading to the death of Ms Sturgess and where responsibility lies.