A new show airing tonight at 9pm on ITV1 will examine the murder of Playboy model Eva Stratford, who was found with her throat slit at her east London flat in 1975.
Her case still remains unsolved more than 45 years after it occurred.
So, what exactly happened to Eva Stratford? Has any progress ever been made on the case?
Read on below to find out all you need to know about Eva Stratford.
The killing of Stratford, who was born in Germany, has never been solved and - along with two similar killings her death has been linked to - is the subject of a new ITVX true crime series.
Eve Stratford, 22, far left, a Playboy Bunny, was stabbed between eight and 12 times when she was murdered on the evening of March 18 1975
Pictured: A photo of model Stratford, left, taken just a few weeks before her murder
What happened to Eva Stratford?
READ MORE: Brutal unsolved 1975 murder of Playboy Bunny - and two similar killings - are re-examined in ITVX series, as her friend says 'there's no-one left' now to fight for justice
<!- - ad: https://mads.dailymail.co.uk/v8/us/news/none/article/other/mpu_factbox.html?id=mpu_factbox_1 - ->AdvertisementOn Tuesday March 18 1975, Stratford, 21, was found in her bedroom after her throat had been slashed between eight and 12 times.
The killing of Stratford, who was born in Germany, has never been solved and - along with two similar killings her death has been linked to - is the subject of a new ITVX true crime series.
Stratford, who also went by the name Eve Van Bock and Bunny Ava, was found tied up with a scarf with a stocking tied round her leg and is believed to have been raped.
She was last seen walking alone near her home in Lyndhurst Drive, Leyton, east London, shortly before 4pm on the day of her death.
Detectives at the time said there was no sign of forced entry to the flat, leading them to believe the model had invited the killer in and may have known them.
Six months after Eve's death, Lynne Weedon, 16, was brutally attacked and raped in an alleyway near her home in Hounslow at 11pm on September 3 1975.
The Playboy Cocktail Bunny, pictured with Eric Morcambe in 1974, was found in her bedroom; her throat had been slashed between eight and 12 times
Theroux has spent four years looking into Stratford's murder, which has been linked to two other murders: Lynne Weedon, was 16 when she was killed in September 1975 and croupier Lynda Farrow, who was murdered in 1979
She died after being found barely alive at an electricity sub station the next day.
Eve and Lynne's murders were linked in 2007 after matching DNA was discovered on the victims, who did not know each other.
In 2015, Lynne's mother Margaret Weedon made an impassioned plea for information. She said: 'It has been 40 years since our beautiful young daughter Lynne was violently taken from us.
'We are well aware that whoever murdered Lynne also murdered Eve Stratford. That young lady also had her life snubbed out. Her family have died now. Another true life sentence.'
A 2015 episode of Crimewatch also shared that when police found that Stratford had visited her agent in Camden, north London and then went to a promotions consultancy in Bayswater, west London.
The documentary sees Louis Theroux's brother, Marcel Theroux, interview Barbara Haigh for the two-part series, who worked as a Playboy Cocktail Bunny at the Playboy Club in London's Mayfair with Eve.
Ms Haigh also posed for a photo with her in the brand's trademark bunny outfit just three weeks before her throat was slashed in a shocking act of brutality.
Haigh who also worked as Playboy Cocktail Bunny in the Seventies, says she felt 'really sick' when she found out what had happened to her former colleague
Haigh tells Theroux that she felt ill when she heard the news of her friend's murder. She said: ' [I felt] Rather sick. Really quite sick, that somebody could be so cruel as to murder a kid like that for no reason.
She added: 'She would never have done anything to provoke that sort of murder. She’s only a kid, and there’s nobody left to defend her.
'Her parents are dead, her whole bloody family’s dead. There’s no one but us old boilers who were around in 1975 who can protect her.'
The Playboy Bunny Murder airs tonight at 9pm on ITV1.
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