"Good enough," replied Nick, approvingly. "Take home the traps I have left in the cab."
"Sure thing. You don't want any help to-night against this push, do you?"
"No, indeed. There'll be but little doing to-night, I imagine. Remember the house, however, in case I fail to show up."
"You may gamble on that, sir. I have it down pat."
They had now passed the upper corner of the side street, and Nick felt sure that he had not been seen leaving the cab. He darted quickly back of the vehicle and gained the sidewalk, then stole back and peered around the corner.
Cervera and her companion were just mounting the steps of an imposing stone residence, entirely separate from its neighbors, and their carriage was driving rapidly away.
Nick waited until the couple had entered the house, then he crossed to the gloom of a doorway on the opposite side and had a look at the dwelling.
From basement to roof there was no sign of a light. Even the hall appeared to be in darkness, and Nick waited and watched for several minutes, expecting to see at least one of the rooms lighted.
Not a glimmer or gleam, however, appeared from any quarter.
"H'm!" he presently muttered, a little perplexed. "Either they are remaining in darkness, or else they have all of those windows heavily curtained. If the latter is the case, I must discover for what reason.