Finding herself with little money and no plan after Stephan's arrest, Marya accepts an invitation to stay with the Heidlers in their studio on the Avenue de l’Observatoire. In the book we are told that the Heidlers 'lived on the second floor of a high building half-way up the street'. The studio is situated near the Luxembourg Gardens, and at night they walk together through the ‘lovely, crooked silent streets’. I find the tall, elegant houses of the Avenue de l'Observatoire, leading away from the gardens, and walk along trying to decide in which building the studio might have been located.