Fynn found Anna wandering the streets of East London in the 1930s and, unable to discover where she lived, took her home to live with his mother. Fynn would spend his evenings talking and playing with Anna; they chatted about life, particularly science and mathematics, and Anna would tell him about her conversations with "Mister God", to whom she poured out all her thoughts and troubles. Anna's innocent but insightful world-view caused Fynn to reassess his own.
'Mister God, This Is Anna' - an all time classic - is the story of Anna's short life and the liberating effect she had on her friend Fynn.