CCTV footage from the night Paul Davis was hit by a car and killed in Ilkeston has been released.
As part of a renewed appeal for witnesses on the fourth anniversary of his death, police are hoping new technology will help them find the driver who hit the father-of-two.
A vehicle can be seen stopping in Corporation Road, close to where the 37-year-old was struck, and turning around.
It is thought the driver could have vital information about his death – the only unsolved hit and run fatality in Derbyshire.
Call police on 101 or Crimestoppers anonymously on 0800 555 111 if you have information about what happened on August 10, 2008.
More updates to follow.