One was the front door, above a flight of brownstone steps.
He opened the front door cautiously, closed it behind him and sprang down the brownstone steps.
The door beneath the brownstone steps was locked, and strongly so.
Someone was actually crawling up the brownstone steps to peer down at the space beneath.
Instead, the fellow swung it toward the front of the brownstone steps.
Again, his laugh receded; he was gone from the brownstone steps.
Looking up, Case saw burning eyes fixed upon the brownstone steps across the street.
Together, the men ascended the brownstone steps and entered the house.
A long run of brownstone steps leads to a center entrance door on the second floor level.
He paid the driver and ascended the brownstone steps of the old house.