Romeo Nkansah died after he was attacked while on a night out in Camden Town on May 29 last year

WHO killed Romeo? That is the searching question which murder squad detectives will ask, 12 months after a killer was able to knife a father-of-two and then escape undetected through some of London’s busiest streets.

On the first anniversary of Romeo Nkansah’s death after a night out in Camden Town, police will launch a fresh appeal for help in cracking the case. The 37-year-old died after suffering a single stab wound in Greenland Street, staggering to the junction of Camden High Street and collapsing close to the Burger King outlet.

Despite the area buzzing with people and a cluster of CCTV cameras across NW1, nobody has been charged with his murder.

The main line of inquiry is that Romeo, who lived on the Andover estate in Finsbury Park, was killed simply for talking to a group of women on May 29 last year.

DCI Jamie Piscopo, who is leading the investigation, told the Tribune he was still ­looking to trace witnesses who may hold the vital piece of evidence.

Appealing to readers, he said: “Did you see Romeo and his friends talking to the group of women or the altercation that then took place? If you can help, please come forward.”

It is thought that the brief conversation led to an argument with a group of men known to the women, which resulted in Mr Nkansah being attacked.

Greenland Street in Camden Town, where Mr Nkansah was attacked

The case bears a ­striking similarity to the murder of 50-year-old Thomas Breen in 2002, whose killer or killers have never been brought to justice despite ­attacking their victim in Camden High Street, a road that remains busy late into the night due to the area’s range of pubs and clubs.

The case of Mr Breen is unsolved – it was closed in 2008, but ­earlier this year the Met agreed to re-examine the files, following years of reporting by the Camden New Journal – the Tribune’s sister paper – and an intervention by Holborn and St Pancras MP Keir Starmer.

In the days after Mr Nkansah’s killing, DCI Piscopo told the New Journal: “People will not get away with this. We will find who’s done it, I’m confident of that.”

He said Mr Nkansah, a Dutch national, was a “family man”, adding: “There were no dubious connections. He was just on a night out with a couple of friends and this happened.”

A neighbour of Mr Nkansah said he was a “professional guy” who had recently set up a building contractors firm.

The neighbour added: “He was a gentleman. He was a very jovial guy. He was very reserved – he was the sort of person that if you didn’t speak to him, he would mind his own business.”

DCI Piscopo said this week: “It is now a year since Romeo was stabbed to death and our investigation is making good progress with ­several lines of enquiry being pursued.

“However, we continue to appeal for witnesses and information and are keen to hear from anyone who was in the area of Bayham Street or Greenland Street in the early hours of Sunday, 29 May last year.”

Six men have been arrested in relation to Mr Nkansah’s killing in the past year. Four men, aged 19 to 23, were arrested on suspicion of murder, but all have been released without charge.

In July last year, two men, aged 22 and 23, were arrested on ­suspicion of assisting an offender in relation to Mr Nkansah’s death. Both have been bailed until late July pending further enquiries.