February 19: 8.30am Becky returns home to 18 Crown Hill, St George, Bristol after staying at a friend’s house.

10.50am – Matthews and Hoare drive towards Becky's home.

11.03am – Becky sends her last text before she is killed and her body, phone and laptop are put in the boot of Matthews' and Hoare's car parked on the driveway.

Between 6pm-7pm – Matthews and Hoare leave Crown Hill and drive home. They order a Chinese takeaway and a pizza.

February 20: 12.51pm – He purchases a MacAllister circular power saw, face masks, gloves and goggles from B&Q in Horfield, Bristol.

4pm – Becky's father reports the teenager missing to police.

6.25pm – Police arrive at Becky's home and speak to Mr and Mrs Galsworthy, Matthews and Hoare. The couple claim they heard Becky leave the previous morning.

9pm – A phone of Matthews and Hoare searches 'Do you want to hide a body?' on YouTube.

February 21 and 22: Matthews and Hoare buy black bin bags and cleaning equipment from various shops in Bristol.

February 23: Police attempt to enter Cotton Mill Lane but no one answers the door. Officers track them down to Wilton Close in Southmead where Hoare agrees for police to search their February 24: In the early hours, Karl Demetrius and Jamie Ireland borrow a van from their work in Filton.

2.19am – CCTV shows a van moving between Cotton Mill Lane and Barton Court, with light coming on by the garden shed.

February 28: Blood found on doorframes outside Becky's bedroom is DNA matched to the teenager. Fingerprints in the spots match Matthews. Hoare and Matthews are arrested on suspicion of kidnap.

March 3: In the early hours, police discover Becky's remains in the shed at 9 Barton Court. Demetrius, his brother Donovan Demetrius, girlfriend Jaydene Parsons and Ireland are arrested.

THE murder of Bristol schoolgirl Becky Watts was one of the most shocking Avon and Somerset police have ever faced.

From the huge manhunt mounted over what first police thought was a missing person case to the grim discovery of the 16-year-old’s dismembered body party in a garden shed and the conviction of Becky’s own stepbrother Nathan Matthews, 28, and his girlfriend Shauna Hoare, 21, the case has involved more than 500 officers and countless hours of manpower. It has devastated all the families involved, left the local community in traumatised and a nation in shock.

And the case has also raised questions over the depravity of people hiding in our neighbourhoods. Residents of Barton Hill described Matthews and Hoare as quiet and shy so why did Matthews end up brutally murdering his own stepsister, surely not just because she left items on the floor which his mother might trip over? And how could the couple then help in the public search for Becky whilst their garden shed hid the horrific truth that they had cut up her body with a B&Q-bought circular saw?

“Our primary aim was always to find Becky safe and well but Matthews and Hoare had already made sure this was never going to happen,” said Det Supt Mike Courtiour.

“In the following days, Matthews lied and misled the police then recruited a number of associates in a bid to conceal Becky’s body and prevent us from discovering what happened to her.

“By this time, our search teams were already in close proximity to the Barton Hill address and I believe it was only a matter of hours until we would have searched the shed.”

The police had been quick to suspect Matthews and Hoare after finding Matthews’ fingerprints in blood stains found on Becky’s bedroom door, but the twisted killers failed to tell police where her body was for 12 days. Under police interrogation, Matthews claimed he had attempted to kidnap Becky to ‘scare’ her but a jury saw through both of their lies and convicted them of murder and manslaughter respectively, with Matthews serving a minimum sentence of 33 years and Hoare 17.

To this day they have not taken full responsibility for their heinous crime, with Matthews only admitting manslaughter and Hoare denying her part altogether, forcing the family to endure a painful and extremely distressing trial.

Becky’s father Darren Galsworthy said: "It truly would have been much easier to have taken us all, than have to cope with the aftermath of this crime.

“Everything beautiful in our lives has been ripped apart with one act of violence.

“When I close my eyes to sleep I see Becky's death over and over again. I hear her cry and see her terror, and then her realisation they are not going to stop.”

Becky suffered 40 injuries to her body. A pathologist found she died of strangulation.

Her mother Tanya Watts, who viewed Becky’s body in a mortuary, said: “Becky must have been so scared, thinking she was safely resting in her own bedroom, to be attacked like that.

“Knowing that her last moment was filled with fear and she would have fought for her life - it is just unbearable for us.

“Those people involved in Becky's murder and dismemberment left us with a lifetime of emptiness, continuing memories of her last moments, nightmares and a grave to visit.”