Then, there it was. The gateway to the compound that housed Olivia’s building, absolutely distinctive because of a tree that had taken root on top of the adjoining wall and spread its weird molten limbs all over the stonework, trying to find some actual dirt to grow in, possibly seeking refuge from the relentless attentions of three different kinds of flowering vines that were using it as a trellis. Sokolov checked in all directions and saw nothing untoward on the street. He walked through the gate into the walled garden that surrounded the building.