Holmes consults on a case involving a Wall Street executive who seems to have died from a heroin overdose; Holmes encourages Watson to start dating again.
Joan tackles her first solo case when a woman disappears after leaving a tearful breakup video for her husband.
Holmes and Watson search for a civil contractor who leaked classified information, but their lives are disrupted by a group of cyberactivists determined to protect the contractor; Joan signs up for an online dating service.
When a fertility lab technician is murdered, details regarding her secret personal life are revealed -- leading to several possible suspects; Watson is investigated by an NYPD detective.
Holmes and Watson are drawn into an Internet war when a member of an anonymous hacker group is murdered.
