A three-year investigation into the murder of John Lennon has unearthed a series of extraordinary inconsistencies - including the suggestion that detectives may have fundamentally misunderstood how the shooting happened. 'Nobody was better placed to say where and how John Lennon was shot.' 'He could not coherently understand why he felt compelled to shoot John Lennon – Chapman did not remember pulling the hammer or aiming,' said Whelan. Chapman, even now, is adamant that he shot John Lennon four times in his back from five attempts. Added: Whelan: 'John Lennon's murder meant that no celebrity voices with any weight, would be heard against Reagan's ambitions and used as a potential opposition rallying cry.