As London comes alive with the 1960s youth revolution, one woman makes a choice that defies all expectations.

'So real and humane and utterly transporting' Meg Mason

It's 1967 and London is alive with the new youth revolution. In the suburbs, meanwhile, Phyllis Fischer inhabits a world of conventional stability. Married with two children, her life is both comfortable and predictable.

But when Nicky - a twenty-something friend of the family - visits one hot summer evenin ...