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.

Jo and Isaac Monroe, her handsome, wealthy new suitor, are spending a night out at a punk rock club when a mummified woman's body is found in a wall at the nightspot. It's the team's first cold case. Dead since the early 80's, the victim may have suffered a drug overdose. Punk rocker Eddie Warsaw, her then boyfriend, was convicted of killing her 30 years ago, although he resolutely declared his innocence. Henry empathizes with Eddie as he, too, lost the love of his life, Abigail. He emotionally remembers back to 1984 when Abigail couldn't handle their growing age difference and takes some time away - never to come back to him.