The final steps of murdered Joanna Yeates were reconstructed in an attempt to jog memories and catch her killer.
The tragic 25-year-old's last journey, which started after she left work, was retrodden by an actress and filmed for BBC's Crimewatch.
This came as police confirmed Miss Yeates did not eat a pizza she was seen buying on her way home, just before she went missing.
The reconstruction focused on what the landscape architect did after she left her firm, BDP, on December 17.
She went first to the Bristol Ram pub on Park Street in Bristol City centre, where she had Christmas drinks with work colleagues.
She spent around two hours socialising with her friends before leaving at around 8pm to make the 30-minute walk home to the ground floor flat in Canynge Road, Clifton, that she shared with her boyfriend Greg Reardon, 27.
Seen on CCTV in a Waitrose supermarket at the Clifton Triangle, she then went to a Tesco Express in Clifton village where she bought a pizza.
During the filming of the reconstruction, the actress playing Miss Yeates entered the Tesco Express on Regent Street in Clifton village.
She was wearing the same cream-coloured coat as Miss Yeates was wearing on the night she disappeared.
She also had a black rucksack and was carrying two plastic bags - including a white bag, which held the bottles of cider she bought previously at Bargain Booze, and a black bag of which the contents have not been revealed, but which police say are not significant.
Inside the store the actress was filmed picking up the Tesco Finest mozzarella, tomato and basil pesto pizza and taking it to the till.
The pizza was paid for at a self-service till with a 10 note.
After receiving her change, the actress left the store and headed up Regent Street towards Miss Yeates's home.
Avon and Somerset Police said tests on Miss Yeates' body concluded she had not eaten the pizza before she was found dead on Christmas Day three miles from her flat.
Detectives said Miss Yeates had made it home to her flat because her shoes, coat, mobile phone, purse and keys were found there - although the pizza, the wrapping and its box are still missing.
The BBC Crimewatch team spent an hour and a half filming at the Tesco Express before moving to another location to film earlier scenes from Miss Yeates's evening.
It is hoped the film will jog someone's memory who may have seen Miss Yeates as she made her way home that day.
Meanwhile Miss Yeates' parents made their first direct appeal since their daughter's body was found on Christmas Day in an icy lane three miles from her flat.
David Yeates, 63, and his 58-year-old wife urged anyone who knew somebody who had reacted strangely to the murder to come forward.
The couple, from Ampfield, Hants, asked: "Do you know someone who has been, somehow, justifying her being killed?
"Please help us identify the killer. Jo was probably acquainted with her killer."
The force has received more than 1,800 lines of inquiry since launching the murder investigation but said key evidence including Miss Yeates's ski sock and the pizza had not been found.
The young woman's body was found with one of her grey, knee-length socks missing, and detectives believe the garment may hold the key to solving her murder.
Officers are investigating whether she could have been strangled with her own sock, which her killer might have kept as a trophy.
Detective Chief Inspector Phil Jones, who is leading the murder hunt, said: "We use Crimewatch as an opportunity to refresh the public's memory in relation to Jo's movements on the night she went missing from her home.
"The programme allows us to visually recreate the route home she took with the aim of jogging the memories of those people who may have seen her.
"The reconstruction may also jog the memories of those people who used Longwood Lane in Failand on Friday December 17 or over that weekend and have not come forward.
"This is a valuable opportunity for us to reach out to the nation in their homes."
A massive police investigation was launched when Mr Reardon reported his girlfriend missing after he returned to Bristol on December 19 following a weekend away visiting family in Sheffield.
Miss Yeates was not seen again until dog walkers found her snow-covered body in Longland Lane, in Failand, North Somerset on Christmas morning.
Police have said there was no evidence Miss Yeates had been sexually assaulted but they have not ruled out a sexual motive.
Miss Yeates's landlord Chris Jefferies, 65, was held for three days for questioning on suspicion of murder before being released on bail.
Anyone with information is asked to contact the Operation Braid incident room on 0845 456 7000 or Crimestoppers on 0800 555 111.