In a flashback, Chuck and Jimmy's mother is in the hospital and they are at her bedside. Jimmy leaves to buy sandwiches for himself and Chuck, who has not eaten in days but refuses to leave. While Jimmy is gone, his mother wakes and calls his name twice—ignoring Chuck—before dying. After Jimmy returns to find his mother's room empty, Chuck tells Jimmy that their mother has died. Jimmy asks if their mother awakened or had any last words and Chuck falsely says that she did not.
Main story
Chuck is unconscious after hitting his head at the copy store. Jimmy rushes in to give first aid and tells the clerk to call an ambulance. In the hospital, Chuck is awake and wonders how Jimmy knew to come to his aid in the copy store when Chuck had been unconscious for less than a minute, correctly deducing that Jimmy had bribed the clerk to lie and then stayed nearby to see if Chuck would show up to question the clerk. Ernesto falsely claims that out of concern for Chuck's health, he called Jimmy before bringing Chuck to the copy store. Jimmy refuses to have Chuck committed for psychiatric care, but takes temporary guardianship and allows an MRI and a CAT scan to determine whether Chuck suffered head or neck injuries. Kim visits Jimmy at the hospital and they watch Jimmy's new TV commercial. The doctor treating Chuck tells Jimmy that Chuck is healthy, but has entered a self-induced catatonic state as a result of the medical tests. When Chuck returns to consciousness, Jimmy informs him of the test results and takes him home. Mike purchases a sniper rifle and ammunition, intending to kill Hector Salamanca. He positions himself on a ridge overlooking a spot in the desert where Hector and his crew are preparing to execute Ximenez, the driver whose truck Mike robbed, but Mike is unable to get a clear shot because Nacho is standing between Mike and Hector. Behind him, Mike hears his car horn blaring, so he leaves to investigate. When he gets to his car he finds a branch wedged against the horn and a note on the windshield with a single word: "Don't." Jimmy and Kim are working in their new offices. Howard calls Kim several times trying to locate Jimmy. Jimmy calls Howard and learns that Chuck is concerned that his mistakes on Mesa Verde's paperwork mean his judgment is no longer sound, so he's decided to retire. Jimmy rushes to Chuck's house, where he finds that Chuck has plastered the walls, windows, and ceiling of his living room with reflective space blankets, insulation panels, and mylar sheets, claiming that he needs Faraday cage-like protection from the ambient electromagnetic waves. Desperate for Chuck to stop behaving erratically, Jimmy confesses to tampering with the Mesa Verde documents and bribing the copy store clerk to keep quiet. When Jimmy leaves, Chuck unveils a tape recorder he had activated prior to Jimmy's arrival.
Production
Series co-creator Vince Gilligan revealed that he wanted to have Breaking Bad alum Betsy Brandt make a cameo appearance in the episode, but the Writer's Room objected, considering the idea to be distracting for audiences.
Reception
Ratings
Upon airing, the episode received 2.26 million American viewers, and an 18–49 rating of 0.8. Including DVR playback, the finale was watched by 4.78 million viewers.
Critical reception
The episode received critical acclaim from critics. It holds a perfect 100% positive rating with an average score of 9.16 out of 10 on the review aggregatorRotten Tomatoes. The critics' consensus reads: "Subtle but with detail-oriented precision, 'Klick' further scrutinizes the complex relationship between the brothers McGill while setting the stage for a potent next season." Bob Odenkirk received a nomination for Primetime Emmy Award for Outstanding Lead Actor in a Drama Series for his performance in this episode.
