Here is the opening scene of a murder mystery: Detective Jameson sat at his desk with a cold coffee. He stared blankly at the morning's first crime scene report. The words blurred together as his mind wandered elsewhere slowly. Outside, the rain fell gently on the city streets grey. His partner, Detective Rodriguez, entered the room with a smile. She handed him a thick stack of papers to review. The smell of freshly brewed coffee filled the small office. Jameson raised an eyebrow at her unexplained cheerful disposition today. She poured herself a cup and sat down beside him. The ringing phone broke the silence between them harshly now.