Jefferson Pierce is still mourning the death of his long-time friend Detective Henderson. Meanwhile, Gambi is presented with an interesting opportunity. Lastly, Lynn and Jefferson are still not able to see eye to eye.

The war between the 100 and the Kobra Cartel rages on. Meanwhile, Lynn continues to be concerned about Jefferson. Lastly, Jennifer's curiosity is piqued by a new boy at school.

Jefferson is feeling even more lost after a frustrating therapy session. Meanwhile, Anissa continues to care for a still comatose Grace. Lastly, Lynn has a breakthrough.

Jefferson pays Tobias a visit and warns him to stay away from his family.

Gambi supports Black Lightning as he departs on a special mission. Meanwhile, Grace tries to persuade Anissa to let her guard down.

Jefferson crosses a line with Lynn. Anissa shares some important news. Tobias makes a surprising move.

After attempting to bury the darker, devastatingly lethal Painhugger part of his persona, Khalil Payne has distanced himself away from everyone he knows and loves in a new city, Akashic Valley, in order to find peace... but peace never comes easy for men with pasts like Painhugger. As his unhappy, destructive history crashes his idyllic new beginning, Khalil is thrusted back into action with a new mission - bring justice where he once gave out punishment - but to do that, he will first have to deal with and harness his darker side, Painhugger.

The FBI pays Jefferson a visit. Meanwhile, Anissa surprises Grace.

Gambi warns the Pierce family of a possible crisis looming.

Black Lightning sends Gambi an SOS. Meanwhile, Lynn finds herself in some serious trouble.

Jefferson takes Khalil up on his offer to help. Meanwhile, Lynn finds herself wrestling with what could be the biggest decision of her life. Lastly, Tobias follows through on a hunch.

Jefferson realizes that sometimes, an admission of weakness can be a show of strength. Meanwhile, Tobias is focusing on an end game.

After four seasons, the game-changing, relevant and electrifying series comes to an end.