Now living a quiet life, ex-Marine sniper Bob Lee Swagger agrees to help his former commander prevent the assassination of the U.S. president.
After being placed in federal custody, Bob Lee pledges to protect his family. Isaac plans his next move. Memphis tries to connect with Bob Lee's wife.
After having a tense conversation with Isaac, Bob Lee reaches out to Nadine and asks her to investigate the cop who took credit for his capture.
Flashbacks shed light on Bob Lee and Isaac's service in Afghanistan. Isaac feels pressure to tie up loose ends. Nadine turns to a CIA agent for help.
A search to find the source of the bullet used in the assassination leads Bob Lee to a militia group. Nadine makes a grisly discovery.
Bob Lee seeks help from his reclusive former instructor, who may hold key information. Nadine tries to persuade Payne to reveal what he knows.
Bob Lee goes on the hunt for the elusive Black King rifle. Nadine pursues an opportunity to speak to a reporter who has inside information.
As Bob Lee plots his endgame, he instructs Julie to take Mary to a safe place. Nadine sticks beside Bob Lee, but wonders if she's getting in too deep.
Bob Lee teams with an unlikely ally in an effort to be reunited with his family, and puts himself in the sights of the person who most wants him dead.
Bob Lee makes a visit to the Russian Embassy, drawing the ire of Krukov and setting the stage for a final life-or-death showdown for justice.
Bob Lee travels to Germany with Julie to attend an award ceremony honoring a Marine from his former unit. Memphis gets a new job offer.
Flashbacks to Afghanistan provide clues about who was behind the terrorist attack. Memphis arrives in Germany. Isaac is forced to go on the move.
Isaac shows up in Texas to see Bob Lee, who's reluctant to work with his old friend. Nadine seeks a journalist who has important information.
Further flashbacks to Afghanistan focus on the identity of a UN doctor. Nadine gets close to a new source, but raises more questions than she answers.
Bob Lee and Isaac pay a visit to a Russian acquaintance as they continue to piece together Solotov's motives. Memphis locates a hard-to-find source.
Bob Lee, Isaac and Ali try to get at Solotov's funding. Nadine kicks things up a notch to help Denning. Julie copes with her anger at a firing range.
Bob Lee and Isaac get into a troubling situation in Mexico. Nadine digs deeper into Atlas. Julie receives a threat.
Bob Lee moves in on a final showdown with Solotov. Isaac and Nadine each edge closer to the truth about Atlas.
Flashbacks to a childhood trauma plague Bob Lee as he's held hostage with Isaac and Julie in pursuit. Nadine confronts a corrupt senator.
Determined to find the truth about his father's death in 1988, Bob Lee starts to investigate. Harris gets dragged into Isaac and Nadine's predicament.
Harris gets on Bob Lee's nerves out on the road as they chase more leads. Nadine and Isaac locate a person of interest who may or may not be friendly.
Bob Lee pays a visit to the Pooles after hearing a new rumor, and Julie follows a lead of her own. Isaac and Nadine pursue an Atlas target.
A visit to an old friend of his father's leads Bob Lee back to D.C., where he connects with Isaac, Nadine and Harris for a mission at a formal event.
Bob Lee and Isaac visit a man who served with Earl in Vietnam. Nadine takes on a risky mission alone. Julie confronts the Bamas.
Bob Lee and Isaac track down a key contact at a psychiatric facility. Memphis looks for evidence at Gregson's house. Red Jr. makes an offer to Sam.
Bob Lee and Julie discover what Red Jr. wanted from Sam. Red Sr. ends up in a tough spot. Carlita, Harris, Isaac and Nadine plot their next move.
Bob Lee's mission to track down Bama Jr. causes discord with Julie. Isaac and Nadine meet with the president's chief of staff.
A search for Carlita leads Bob Lee and Isaac to a remote Atlas outpost. Nadine and Harris put pressure on Brooks. Julie has an unsettling realization.
As Julie tries to keep Mary safe, Bob Lee sets his sights on Brooks. Nadine and Isaac develop a plan involving an Atlas recruit.
The U.S. president reaches out to Nadine and Harris for their assistance. Julie and Bob Lee have an emotional discussion. A new threat endangers D.C.
As Atlas and Red Bama attempt to execute desperate missions, Bob Lee tries to reconnect with Julie while getting dragged back into the fight.