San Francisco, June 1967 When the taxi dropped Connor in the centre of Haight-Ashbury outside a tall, thin Victorian terrace sporting bright yellow walls, he was as excited as a red setter chasing a stick. Once he had settled into his digs - a bed and bathroom but no kitchen - he left his bag and headed down the creaky spiral stairs and into a new world. At the front door, he bumped into Tony the landlord, from whom he had earlier collected the key, a giant, hirsute figure, like the singer from Canned Heat.…