Kenny Richey has spent 18 years on death row in the US for killing a two-year-old child in Ohio in 1986.
Kenny Richey was convicted of killing a two-year-old child in 1986
Richey's conviction has been overturned twice and prosecutors have been given 90 days to release or retry him.
The 43-year-old Scot was sentenced to death in January 1987.
3 August 1964 : Kenny Richey is born in Holland to an American father and Scottish mother. His parents move to Edinburgh when he is a baby.
December 1982: Following his parents' divorce, Richey moves to the US to live with his father in Columbus Grove, Ohio.
1984: Richey moves to Minnesota where he meets his future wife Wendy and joins the US Marines.
1985: Richey is discharged from the Marines. After his marriage fails he returns to Columbus Grove to live with his father.
30 June, 1986: One week before Richey is due to return to Scotland, two-year-old Cynthia Collins dies in a house fire.
January 1987: Richey is convicted of murder and sentenced to death. An immediate appeal is lodged.
30 June, 1987: Richey's first scheduled appointment with the electric chair coincides with the first anniversary of the child's death. A stay is granted.
1992: A direct appeal is lodged with Ohio Supreme Court and denied by four votes to three.
1994: Richey comes within an hour of death before a stay is granted.
March 1997: An appeal is lodged with the same judge who sentenced Richey to death. It is rejected.
Two witnesses who had claimed they heard Richey threaten to burn down the Ohio flat where Collins died, retract their statements.
1998: An appeal is denied by Ohio Supreme Court.
June 1998: Richey's last scheduled execution date is avoided when a stay is granted and the case is transferred to the federal courts.
March 2004: About 150 MPs sign a Commons motion backing Richey's claim of innocence after Prime Minister Tony Blair pledges to look into the case.
25 January, 2005: The 6th US Circuit Court of Appeals overturns Richey's conviction and sentence based on incompetent legal counsel.
8 February, 2005: Ohio Attorney General Jim Petro files a state motion to rehear Richey's case and asks for an extra 14 days to prepare its challenge.
22 February, 2005: Prosecutors file their request for an entire 12-judge appeal court to reconsider its decision.
18 April, 2005: The 6th Circuit Court of Appeals denies the state's request to rehear the appeal.
21 April, 2005: Mr Petro files a stay seeking to quash the decision to overturn Richey's conviction.
13 May, 2005: The appeal court rules that the decision to quash his conviction cannot be set aside. Richey must be retried within 90 days of 25 May or be set free. Prosecutors have until 14 July to lodge an appeal with the Supreme Court.
25 May, 2005: The 90-day countdown begins.
2 June, 2005: PR guru Max Clifford is hired to represent Richey if and when he is released.
22 June, 2005: Prosecutors meet to discuss whether they will retry the case.
30 June, 2005: Putnam County prosecutor Gary Lammers announces that Richey will be retried, telling reporters: " "The evidence supports that Mr Richey set the fire that callously ended this little girl's life."
November 2005 The US Supreme Court held that the decision to overturn his conviction may not have been procedurally correct and so asked the Court of Appeals of the Sixth Circuit to reconsider.
10 August 2007 Richey's conviction is overturned by the Sixth Circuit. The court ordered that Richey should be retried or released within 90 days.