On the Case with Paula Zahn (2009)

Season 7: Episode 1

When Jackie Casseteri fails to show up for work, her friends and family know something is terribly wrong. Her sister rushed to her apartment and stumbled upon Jackie's lifeless body lying on the floor in a pool of blood. Investigators were unable to determine the cause of death and believed that the key to solving the mystery were calls made to a telephone dating service, from Jackie's cell phone... after her death.