"Interrogator": "What happened when Mark and Eisen were arguing among themselves?", 
"Interrogee": "When Mark and Aizen were arguing, Mark was telling Aizen that he shouldn't have done this and should have surrendered. Mark said the police would have spared him if he had told them that his roommate's death was accidental. Aizen was saying he needed Mark's help to dispose of the body. Then a white car arrived with a man in a black coat. The car stopped beside them, and the man stepped out, starting to talk to Aizen and Mark."