It was meant to be the most magical day of their lives. Johnny Depp and Amber Heard were getting married, tying the knot at his mother Betty Sue's Beverly Hills home in February 2015.

Yet his friends and family foresaw the nightmare that was to come. Stephen Deuters, Depp's assistant, admitted that the news of their engagement filled him not with joy but 'inevitable dread'. Punk rock pioneer Patti Smith, enlisted to give a reading, is said to have confessed to sharing Deuters's concern.