When the body of a bisexual young woman is found slain, Goren and Eames note the similarities between her death and a number of murders committed by a convicted serial killer, turning their attention to a human-behavior researcher.

Adriana Sevan, Alison Bartlett, Jack Gwaltney, Jade Wu, James Naughton, Jenny Bacon, Joel Rooks, John Fiske, Katheryn Winnick, Kelli Simpkins, Marcus Chong, Melanie Nichols-King, Michael Lombard, Miguel Sierra, Mike Hodge, Stewart Steinberg, Victor Colicchio, Wayne Gurman