Motives & Murders: Cracking the Case

Wicked in the Windy City (2x9)

Air date: Dec 29, 2012

Renee heads home from the gym on a cold, rainy Halloween; her favorite night of the year. The next day, she's found strangled to death on her bathroom floor. Police struggle to identify a killer. Could Renee be a victim of a 'trick or treat' gone bad?