While investigating the disappearance of 16-year-old Taylor, Sean discovers she was a member of an online social network linked to several suspected suicides. He believes a serial killer is posing as a teenage girl to prey on vulnerable youths, making each of them look like they have taken their own lives. Using his unique pattern-reading intelligence to figure out the murderer's method, the detective's net closes in - leading to a startling discovery. (thetvdb.com)