On 24 September 1980, Bonham was picked up by Led Zeppelin assistant Rex King to attend rehearsals at Bray Studios for a tour of North America, to begin 17 October in Montreal; it was the band’s first tour since 1977 . During the journey, Bonham asked to stop for breakfast, where he drank four quadruple vodka screwdrivers (16 shots, totalling between 400 and 560 ml). He continued to drink heavily at rehearsals. The band stopped rehearsing late in the evening and then went to Page’s house, the Old Mill House in Clever, Windsor. After midnight on 25 September, Bonham fell asleep; someone took him to bed and…