Scarlett Keeling's mother Fiona MacKeown has been fighting for justice for her daughter for more than eight years, since she was raped and killed.
The 15-year-old schoolgirl's body was found on a beach in the Indian resort of Goa in February 2008. But attempts to convict anyone over her killing have led to suggestions of police incompetence and political cover-up - two men were cleared of raping and killing the teen on Friday.
Here's a timeline of the key events in the case:
Scarlett travels to India for a six-month family holiday with her mother MacKeown and six of her eight brothers and sisters from their home in Bideford, Devon.
Scarlett's bruised and battered body is found on Anjuna beach in Goa on February 18. She had been raped and deliberately drowned. She was at a Valentine's Day beach party while the rest of her family went travelling.
MacKeown returns from a trip to the neighbouring state of Karnataka on February 19 to discover her daughter is dead.
A first post-mortem examination rules Scarlet died from an accidental drowning.
A second post-mortem, carried out after pressure from MacKeown, reveals Scarlett was raped and killed. It also shows that the teenager consumed ecstasy, cocaine and LSD on the night she died.
Samson D'Souza and Placido Carvalho, who worked at a nearby beach shack, are later arrested, along with a third man who was questioned over supplying drugs.
Nerlon Albuquerque, the Goan police officer who first investigated the death, is dismissed.
A third post-mortem in the UK after Scarlett's body is flown home reveals her uterus, kidneys and stomach were removed without her mother's permission.
MacKeown says she fears there has been a police cover-up over her daughter's death because the man responsible was a "powerful person" with money and connections in Goa.
MacKeown is summoned to appear before Goa's Directorate of Women and Child Development to answer allegations of neglect on October 15, but refuses to attend.
Scarlett's missing internal organs are returned to her mother.
D'Souza and Carvalho go on trial in Panaji on charges of culpable homicide and rape.
D'Souza and Carvalho are cleared of both charges at Goa Children's Court.
Speaking at a press conference in Goa after the verdict, MacKeown calls police "corrupt", and vows to continue fighting for justice.
"The medical evidence confirms that my daughter Scarlett was grievously assaulted, raped and murdered after some criminals gave her alcohol and cocaine.
"Right from the beginning I knew that the local police did not want to prosecute the killers. It took a huge effort from me even to get the police to register a complaint.
"I had some hope that the CBI... It is clear that they are either incompetent or corrupt and I don't believe that they are incompetent."