The rain tapped gently against the windowpanes of Detective Alex Mercer's apartment as he sipped on a lukewarm cup of coffee, staring into the night. The phone buzzed, jolting him from his contemplation. He answered with a weary "Mercer." "Detective Mercer, there's been a murder," crackled Lieutenant Rodriguez's voice through the line. "Give me the details," Alex responded, already reaching for his coat.