How alcohol and seething resentment turned Thomas Schreiber to murder

Smouldering buildup to attack on Sir Richard Sutton and Anne Schreiber began in Schreiber's teenage years

Thomas Schreiber spent the morning of 7 April visiting his father's grave - it was the eighth anniversary of his death - and in the afternoon worked on an abstract painting while downing gin and tonics. Art was Schreiber's passion, firing his imagination and soothing his mind. Drinking regularly and heavily was another mechanism for trying to keep despair at bay.

As the day wore on, Schreiber left his makeshift studio in the snooker room at Moorhill, the Dorset mansion he was sharing with his mother, Anne Schreiber, and her partner, the wealthy landowner and hotelier Sir Richard Sutton, and appeared in their part of the house.