On the one year anniversary of 28-year-old Teon Palmer's murder, police are returning to the scene of the crime in Edmonton to appeal for information.
Officers are offering a reward of up to £20,000 for details that lead to the prosecution of his killer or killers.
Teon's family and friends will also be returning to the Goodwin Road area to pay tribute to him by holding a vigil.
Teon died of a single stab wound to the chest.
DCI Neale Baldock is leading the investigation.
More top news
Five teenagers have been injured - two seriously - after an unprovoked acid attack at a train station in Essex.
The Blackwall Tunnel in south-east London has re-opened this morning after a 20 hour closure that caused travel mayhem.
One of the teenagers was left so badly burnt doctors say he may lose his eyesight.