"Social Engineering" is the seventeenth episode of Forever. It aired on March 3, 2015.
"Henry and Jo examine the world of cyber-terrorism to track down a killer when a member of a secret hack-tivist group turns up dead. The investigation also puts Henry in jeopardy of having his own secret exposed. How far will he go to keep his mystery from being revealed? He must walk a fine line between judging if others' secrets are worth keeping in order to save himself or be ready to take off – again. Flashbacks to an 1865 London hospital revisit Henry's first wife, Nora, who is now in her 70s and threatening once again to reveal Henry's condition, with disastrous results. Abe remembers back to his activist days and offers Henry an important clue to his current case."
- Jane Alexander as Nora Morgan
- "In 1912, Guglielmo Marconi predicted his invention the radio would out end t war. No more miscommunication, no more secrets. Then 200 million people were murdered in the century following. Meanwhile, we came up with better ways to communicate. None of which, alas, put an end t lies, miscommunication, or murder." —Henry
- "You live by a code? So do I." —Henry
- "Perhaps privacy is a thing of the past. In the future, everything about us will be available with the touch of a button -- who's fallen in love, who's gotten sick, who's having an affair. Maybe it's a good thing -- a future without secrets. Of course, those of us with a few more years value our privacy. We've made our mistakes and survive them. It's not that we want to keep these secrets from others. Usually, we're keeping them from ourselves." —Henry
- Episode recap at Forever official website – archived from the original on December 26, 2015
- Episode at IMDB
- Watch this episode on CW Seed