Olivia, Walter, and Peter are called in to investigate the death of a car salesman who was found in a pool of "goo," exactly like another man across the country. When Walter discovers that the "goo" is brain matter, the trio tries to figure out how the killer can liquefy human brains. As the deaths pile up, the investigation reveals a common thread linking the victims together in an unthinkable manner. Meanwhile, Olivia is horrified when the case places a loved one in harm's way.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
The trio investigates the deaths of a teenager and a car salesman whose brains have been liquefied after watching a video sent to their computers. All of the victims are connected to a computer programmer ( Chris Bauer ) who has lost his job. The murderer then sends the video to Olivia's laptop, almost killing her niece Ella, before Olivia is able to intervene. In order to catch the suspect, Olivia defies an order from Agent Harris, and Broyles puts his friendship with Harris on the line to defend her.