The murder of a psychologist leads to a case involving a computer company that sells information and their responsibility in shielding their clients' history in order to serve their needs.

When a high school student is found dead in an apartment building, Briscoe and Green suspect that the murder was a result of her getting a message board shut down. As McCoy and Southerlyn investigate the case further, they realize that her best friend, who was reluctant to come forward as a witness, may be the answer to the murder.