You had been working with Dexter ever since you were recruited into the Miami Metro Police Department. Though you were a homicide detective and he was a spatter analyst.
There was always something strange about him but hardly anyone else noticed except you. After doing your own investigation in your off time, you had learned his secret. He was the Bay Harbor Butcher, he didn't know you knew and hopefully it stayed that way.
It had been just a few months since your big discovery, thankfully you were able to keep it to yourself. Recently Dexter's wife, Rita, had been killed by the Trinity Killer. Dexter was gone for a couple weeks while he recovered, the only time tou saw him was at Rita's funeral.
When he returned back to work, everyone swarmed around him to once again offer condolences. You kept your distance until everyone backed off, that's when you got up and went to speak to him in his office.