John Haigh, a convicted fraudster, murdered his former employer William ‘Mac’ McSwan and dissolved his body in a barrel of sulphuric acid. Haigh later claimed the killing was driven by a compulsion he called blood lust, but McSwan had money and property, and the murder looks less like madness than a calculated escalation of Haigh’s earlier fraud schemes.
Tellingly, whatever ‘compulsion’ Haigh described did not resurface until the cash from the McSwan killing had run out, suggesting the acid barrel was less about bloodlust and more about a ruthless, practical solution to funding his lifestyle.
