Rekha Kumari-Baker was born in India and later moved to the United Kingdom. She married David Baker, and together they had two daughters, Davina and Jasmine. The couple eventually divorced, and Rekha took on the role of a single mother. She worked as a waitress to support her family. Friends and acquaintances described her as a devoted mother who prioritized her children's well-being. However, beneath this facade, Rekha harbored deep resentment towards her ex-husband.

On 13 June 2007, Rekha Kumari-Baker took her daughters, 16-year-old Davina and 13-year-old Jasmine, on a shopping trip to the Lakeside Centre near Thurrock, Essex. The outing appeared to be a normal family day, giving no indication of the horrors that would unfold later that night.

Upon returning home to Stretham, Cambridgeshire, Rekha waited until her daughters were asleep. In the early hours, she entered Davina's room and stabbed her 39 times, resulting in her death. She then proceeded to Jasmine's room, where she inflicted 29 stab wounds, killing her as well. After committing the murders, Rekha contacted a friend who was a special constable, confessing, "I've done something terrible... I've killed the kids."

The subsequent investigation revealed that Rekha had purchased the murder weapons, kitchen knives, from ASDA on 11 June, indicating premeditation. Prosecutors argued that the murders were an act of revenge against her ex-husband, David Baker, aiming to "retaliate against David Baker and destroy the happiness in his life." The jury took only 35 minutes to convict her of the murders.

On 21 September 2009, Rekha Kumari-Baker was sentenced to life imprisonment with a minimum tariff of 33 years. At the time, the BBC reported that this was "one of the longest jail terms given to a woman in the UK in modern times." The judge, Mr. Justice Bean, remarked on the severity of her actions and the apparent motive of vengeance against her former spouse.

In the aftermath, Cambridgeshire County Council conducted a review of the case, concluding that the murders could not have been prevented and provided recommendations for social workers to better assess and manage similar situations in the future.