Truth or Dare kill confession student jailed for minimum of 15 years

Tiernan Darnton has been sentenced at Preston Crown Court (Lancashire Police/PA)

A student who admitted in a Truth or Dare game to murdering his stepgrandmother in a house fire has been sentenced to a minimum of 15 years in custody.

The family of Mary Gregory, 94, thought she was the victim of a tragic accident as an inquest ruled three years ago she died from a dropped or carelessly discarded cigarette.