[s15e12] The Betrayal -

A recently widowed character who works closely with Nikki throughout the two-parter. Viewer's Guide: What to Watch For

Uncovers the critical DNA discrepancy that shifts the direction of the case. [S15E12] The Betrayal

Forensic investigators Harry and Nikki find a discrepancy in the DNA evidence from different crime scenes, leading Harry to discover that a rival laboratory may have compromised the samples to frame specific individuals. A recently widowed character who works closely with

The "Wraith" is eventually unmasked after a shocking betrayal is revealed, leading to a horrific final confrontation. Key Cast & Characters [S15E12] The Betrayal