Neil Corridge was a 20th century human businessman. He was having dinner alone at Beswicks in 1968 when he overheard a conversation between Diva and a Maximillian Arrestis clone, though he did not know it was a clone. They were dining at Beswicks via the Crystal Bucephalus. Corridge witnessed the murder of the clone with poisoned wine.
However, the Bucephalus gave its patrons a reality quotient of 0.5 when they were in the past. So when Diva and the corpse returned to the 108th century, it was as though nothing had happened in 1968, and as far as Corridge was concerned, he had an uneventful dinner. (PROSE: The Crystal Bucephalus)