Captain Rogers seems to be surprised to hear that.
"Serial killer, eh? Bob? Why do you think that?"
Robert/ Bob replies: "Because, every day in the U. S., a dozen people are killed, on average. Those killings usually do not have a symbol or signature on the scene. Killers who will continue to commit crimes usually leave a signature. This one has a note that references tarot cards. Oh, yeah, I think there are more than just one killer. I don't know yet. It's just my guess. The crime scene team is still processing and dusting for fingerprints. But, does anyone know anything about tarot cards?"
Captain Rogers answers, "I am sure we have someone on the force who knows."
"OK. Can I leave and go home now? I am pretty sure you are not giving me overtime pay for this."