Kelly leaves the club after failing to make the planned contact. A man follows her out ...
Then ... He urges her into his car and they drive off, closely pursued by the waiting police. A block along Jackson, they make a left (below) into Sansome (map).
... and Now, this part of the Jackson Square neighborhood has changed very little as this recent photo attests.
Then ... Viewed from Jackson, they proceed along Sansome.
... and Now, another mostly unchanged block, with Gold Street alley on the left.
Then ... It soon becomes clear to her that the man is an opportunist out for a good time - he has nothing to do with Kelly's rendezvous. Distressed, she leaps out of the car and the cops rush in to nab the wrong man.
... and Now, he was apprehended in front of 1045 Sansome Street at the junction with Green Street. From the start (map, blue marker) to the finish (red marker) the car journey had covered a mere 5 blocks.