Minutes tick by. A vehicle sporting an Uber sticker picks up the couple, taking them away. A few people trail out of the door and depart. The predators are aware that people are present. Twice two lone kine walk your way down the alley and then pause. They are near enough to the group to hear their phone conversation. These people are near enough to hear normal spoken conversation.
Within five minutes the two humans move away from the four and out of sight.
This is not a quiet secluded spot, driven home by the Breach that had occurred earlier tonight. As minutes tick by, the press of time is real. The investigation to find the photographer is time sensitive and time is getting away from you. A YouTube video could be edited and loading online by now. Photographs could be uploading or shared across the web.
What do you do to investigate the scene? There's a dented dumpster in the middle of the alley. Long shadows stretch over the dumpster. Crime scene tape had blocked the dumpster off earlier. The tape is torn and now hangs, fluttering. Peices of paper and trash litter the ground of the alley. You can't identify clues at any distance, you will have to be clear where your character moves to.
Where could the photographer have stood to get a good look at the Breach? Perhaps something was left behind...
Describe the actions that your character takes precisely. Where do they look? Do they look at the business cards and trash in the floor? Is Horatio's dog kept from the scene? I need an investigation roll from everyone who investigates. Remember that studying the scene takes time: you could do an extended roll up to 5, but be aware that this costs time.