我们需要确定凶手是谁。
指纹证据无瑕疵。[{'character': '指', 'pinyin': 'zhiii3', 'highest pitch': 8.54, 'lowest pitch': 6.71, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '纹', 'pinyin': 'uen2', 'highest pitch': 8.94, 'lowest pitch': 6.54, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '证', 'pinyin': 'zheng4', 'highest pitch': 11.17, 'lowest pitch': 8.75, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '据', 'pinyin': 'jv4', 'highest pitch': 8.75, 'lowest pitch': 6.99, 'duration': 0.3, 'prosody hierarchy': '#2'}, {'character': '无', 'pinyin': 'u2', 'highest pitch': 9.45, 'lowest pitch': 7.11, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '瑕', 'pinyin': 'xia2', 'highest pitch': 9.32, 'lowest pitch': 6.73, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '疵', 'pinyin': 'cii1', 'highest pitch': 10.44, 'lowest pitch': 8.43, 'duration': 0.34, 'prosody hierarchy': '#4'}]