During a visit by authorities to his Dartmouth Park home, a wood carving spelling out "Love" was found on Johnson's mantelpiece, but the object did not arouse any suspicion. In September 2016, the couple split up after Angela found out about Johnson's previous convictions in a detailed letter, with Best saying that she had felt the "happiest" she had ever been after finding love with someone else, despite Johnson continuing to profess his undying love for her daily. When he was visited by a social worker and psychiatrist on 8 December 2016, he was not found to be in a depressive state and still denied being in a relationship. Two days before Best's murder, he had another appointment, but it was called off because his social worker was sick. On the morning of 15 December Ms. Best decided to visit Johnson at his Islington flat to help with an appointment with the Jamaican embassy. Soon after entering the house, Best was struck at least six times with a claw hammer by Johnson, who finally strangled her with a dressing gown cord despite her efforts to defend herself. Hours after killing her, Johnson proceeded to throw himself in front of an express train at Cheshunt railway station, losing his right arm and left hand in the process. While the medics were treating his injuries, authorities visited his home and discovered Best's body in the living room. At trial, the now-wheelchair bound Johnson confessed to killing Angela Best, and was sentenced to 26 years imprisonment. His lawyer, Annette Henry QC, said that he would likely die behind bars and that: "He does not wish to be alive. He hates himself for what happened." The crown later appealed and Johnson's sentence was increased from a minimum of 26 years to a minimum of 30. Best's family, among them her son Raphael and her sisters Lorraine Jones and Valerie Archibold, described her loss as "immeasureable", adding that she loved her children and grandchildren dearly. Camden and Islington NHS Trust, which was responsible for Johnson's care in the community since 2004, said it would provide Best's family with an independent report and that Johnson's treatment complied with conditions set by the Mental Health Tribunal which oversaw his discharge in 1997.