In a military cell, Strand bribes a guardsman to save a feverish Nick from being moved. Liza helps Dr. Exner with patients at the hospital. Chris is devastated that Liza left voluntarily to help at the hospital, but Travis promises to bring her back. Madison discovers Daniel detaining Adams in the Trans' basement. Alicia and Chris get drunk in and vandalize the abandoned home of a wealthy family. Strand recruits Nick for an escape plot. Travis convinces Moyers' squad to take him to the hospital to check on his friends. While en route, Moyers encourages Travis to shoot a zombie, but Travis is emotionally unable to pull the trigger. The soldiers stop to assist another squad in a building infested by zombies, and most of those soldiers, including Moyers, are overcome. The few survivors flee and drop off Travis near the Safe Zone. Travis learns that Daniel tortured Adams into revealing what "Cobalt" means: in the morning, all civilians will be killed, and the guardsmen will evacuate the city. Griselda dies of septic shock at the hospital; Liza shoots her brain to prevent reanimation. Daniel visits a nearby sports arena to verify Adams' story that it was sealed with 2,000 now-zombified civilians inside.
Reception
"Cobalt" received positive reviews from critics. On Rotten Tomatoes, it garnered a 76% rating with an average score of 7.73/10 based on 21 reviews. The site consensus reads: "In the penultimate episode of Fear the Walking Dead's first season, 'Cobalt' injects new life into its sequestered group of survivors with an intriguing new character." Matt Fowler of IGN gave "Cobalt" a 6.8/10.0 rating stating; "While 'Cobalt' may have set us up for a zombie-filled FTWD finale, it was also sort of a mess. Travis continued to do nothing except witness things while, for some reason, an evacuation plan needed to be brutally tortured out of a National Guardsman who should have been on the Salazar family's side given his feelings for Ofelia. Granted, there were some nice, dark Daniel moments here, but there were too many puzzle pieces missing. Even Madison felt wasted this week." Josh Modell writing for The A.V. Club praised the episode with a qualification of B+ and in his review he said: "The question that had interested/nagged me a bit over Fear The Walking Dead's first few episodes was answered tonight, in a couple of interesting, insightful ways". Jeremy Egner of New York Times praised the episode and wrote: "Titled "Cobalt," the episode was an anxious, nervy hour that resisted overwrought obviousness - the Achilles' heel of The Walking Dead - in favor of shaded musings on the moral relativism of the survival instinct".
Ratings
"Cobalt" was seen by 6.70 million viewers in the United States on its original air date, slightly above the previous episodes rating of 6.62 million. "Cobalt" was the first episode of Fear the Walking Dead to have a higher viewership than its previous episode.
