Farley knocks into one of the table legs as he returns to his seat at the table. One single splash of coffee hits white paper reminding him of how little he has to go on.
The chance of robin hood knowing about Warren are slim. Farley had just found about Warren recently himself. He was on a job tailing a small time thief when he was led to Warren. That's the dangerous thing about Warren. He's not exactly a thief himself. He manages other thieves like a business. Farley had only told the captain Warren's name and was paid for it. He had expected to be put on tailing duty for a while, but the captain had assured him that he would have possible target locations watched. It would be a set-up.