Body language experts analyze Bryan Kohberger's cold demeanor during his Idaho murder sentencing, revealing moments when his emotionless facade cracked during victim impact statements.

The convicted murderer appears gaunt and expressionless in the photo, taken as he begins to serve out multiple life sentences for the murders of four University of Idaho students: Xana Kernodle, 20; Ethan Chapin, 20; Madison Mogen, 21; and Kaylee Goncalves, 21.

She told police that they planned to meet shortly after he stabbed four students, but that they stopped talking because their conversations made her "uncomfortable."

"Happy Face Killer" Keith Jesperson believes Kohberger's awkwardness and high-profile murder case make him vulnerable, and he's recommending a transfer to Oregon.

One victim’s aunt urged the killer to call her and answer her questions. Another’s sister demanded to know her sibling’s last words.

Kaylee’s sister Alivea Goncalves delivered a blistering takedown of Kohberger at sentencing, demanding the slouching psycopath ‘sit up straight’ as she spoke directly to him

Idaho quadruple murderer Bryan Kohberger transitions from county jail to maximum security prison where inmates with life sentences have nothing to lose