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Warning Signs

"Warning Signs" is the third episode of the ninth season of the post-apocalyptic horror television series The Walking Dead, which aired on AMC on October 21, 2018. It was written by Corey Reed from a story by Reed and David Leslie Johnson-McGoldrick, and directed by Dan Liu. The episode runtime is approximately 45 minutes and focuses on tensions arising from the integration of the Saviors into the community, leading to suspicions and conflicts.

Synopsis

Plot

Tensions escalate at the bridge construction camp as several Saviors go missing, including , whose reanimated body is discovered with a suspicious spear wound, suggesting human intervention. addresses the group to maintain unity, but a brawl breaks out between the Saviors and other survivors, with accusations flying toward and others. Rick organizes search parties to investigate the disappearances, pairing himself with , with , and others. Meanwhile, at Oceanside, delivers supplies but encounters wary Oceanside residents. Cyndie and from Oceanside clear a walker-infested recovery center, where they reveal to and that they have been killing Saviors, including , as revenge for the Saviors' past murders of Oceanside members, including Cyndie's brother. The group confronts Arat, a former responsible for one of the killings, and despite Daryl's objections, Maggie allows Cyndie to execute her, influenced by a letter from advocating for over endless mercy. Rick arrives too late to intervene, highlighting fractures in his vision for peace. In a parallel subplot, (formerly Jadis) contacts a mysterious party via radio, preparing to trade Rick and for supplies, and knocks out Gabriel after he discovers her deception. Enraged by the killings, the Saviors abandon the bridge project, while Maggie and Daryl decide to visit in his cell, questioning Rick's approach to forgiveness. Throughout, Daryl expresses distrust toward the Saviors and Anne, while Michonne voices concerns about sustaining alliances amid the violence.

Cast and characters

The main cast of "Warning Signs" features as , the group's leader mediating disputes at the bridge camp to preserve unity despite rising suspicions over missing Saviors. portrays , whose distrust of the Saviors deepens as he investigates the disappearances and confronts the ethics of vengeance. returns as Maggie Rhee, the Hilltop leader who authorizes Oceanside's retaliatory killings, balancing justice with Rick's ideals of mercy; her appearance follows her departure after season 8. Recurring characters include as , who joins Rick in searching for clues to the missing amid camp tensions. plays Tara Chambler, Oceanside's leader navigating community divisions over the Savior threat. appears as Alden, a former trying to de-escalate conflicts at the camp following Justin's death. Guest appearances include as , a confrontational whose death ignites the episode's central conflict. Sydney Park portrays Cyndie, an Oceanside resident whose grief drives the revenge killings against the Saviors, culminating in Arat's execution. plays , providing light moments at the work camp amid the unrest.

Production

Development

The episode "Warning Signs" was written by Corey Reed and directed by Dan Liu. Season 9 of The Walking Dead, including "Warning Signs," adapts elements from comic book issues #127–144, which depict the post-war integration of former Saviors into Alexandria and other communities, as well as early conflicts with external threats like the Whisperers. However, the episode's focus on tensions with Oceanside—a community original to the television series—deviates from the source material, introducing unique conflicts over Savior labor and revenge for past atrocities. Key creative decisions centered on plot devices like Georgie's note from season 8, which provides blueprints for sustainable infrastructure and influences Maggie's pragmatic leadership at Hilltop, justifying her hardline stance toward the Saviors in the episode. The script also incorporates a zombie attack scene paying homage to George A. Romero's through staging and tension-building elements reminiscent of the film's . Showrunner Angela Kang prioritized escalating interpersonal and communal tensions in season 9 to transition beyond ' leadership, using "Warning Signs" to highlight ideological clashes while setting up his exit and character returns like limited role before her planned departure. Kang noted the season's emphasis on "building out the world a bit more" with layered conflicts to sustain narrative momentum after major cast changes. Development for "Warning Signs" began during the planning of the season 8 finale in early 2018, aligning the episode's bridge-building metaphor with broader themes of fragile alliances across communities.

Filming

for the episode took place in , USA, utilizing established sets in Senoia for Hilltop colony scenes and Riverwood Studios near Senoia for Oceanside beach sequences. Filming occurred during July and August 2018, immediately following the wrap of season 8 production earlier that summer, as part of the broader season 9 shoot that began on May 1. This timeline allowed the crew to capture seasonal outdoor elements while coordinating with the post-apocalyptic narrative's demands. The production encountered logistical challenges, including coordinating a large caravan sequence that involved over 100 extras to depict group migrations and tensions among survivors. Underwater filming proved technically demanding for the river scene involving the discovery of a body, requiring specialized equipment and safety measures in Georgia's waterways. Night shoots were essential for the episode's confrontation sequences, extending work hours to achieve the desired atmospheric under limited . Technical aspects emphasized practical effects for the walker horde, paying homage to earlier seasons' visceral style, with actors in forming the core of small groups before VFX enhancements simulated larger crowds using tools like Golaem for . Drone shots captured expansive migration sequences, providing sweeping aerial views of the survivors' movements across rural landscapes. The script's action-heavy scenes, such as searches and skirmishes, directly influenced the shooting schedule by necessitating coordinated stunt work and location transitions.

Reception

Critical reception

"Warning Signs" received universal acclaim from critics, earning a 100% approval rating on Rotten Tomatoes based on 19 reviews, with an average score of 8.4/10. The site's consensus praised the episode for balancing "skillfully built suspense with rare moments of respite to create one of the best installments of The Walking Dead in years." Reviewers highlighted the episode's tension and character dynamics, particularly in the investigation into missing Saviors and the ensuing conflicts among key survivors. Entertainment Weekly highlighted the Oceanside twist as intensifying the ideological clash between mercy and retribution, setting up a gripping confrontation. Similarly, Forbes commended the resolution of the abduction plotline as "solid and moving," noting its effective blend of tenderness and vengeance that advanced season-long arcs. Common praises centered on the episode's suspenseful investigation , which built intrigue through paired survivor searches and unexpected reveals, such as the Oceansiders' role in the killings. Critics appreciated the emotional depth in the Maggie-Rick conflict, where alliance with underscored diverging visions for justice in the communities. emphasized how these dynamics reignited excitement for the series' future direction. CinemaBlend described the episode as reaching "seldom seen emotional heights," particularly in family moments like the ' "Fun Day" juxtaposed against rising threats. While overwhelmingly positive, some criticisms addressed pacing issues, with certain scenes feeling drawn out amid the migration and community-building efforts. Empire magazine gave it a 3/5, arguing that the show struggled to generate truly compelling drama from inter-group tensions despite strong action sequences. Minor complaints surfaced regarding the introduction of secondary Oceanside characters, seen by a few as underdeveloped amid the episode's focus on core survivors. CultureFly echoed this, calling parts "mundane and pointless" in their execution. Thematically, "Warning Signs" delved into the tension between and in a post-apocalyptic society, uniquely highlighted through the Oceansiders' vigilante killings against Saviors for past atrocities. This conflict peaked in and Daryl's reluctant endorsement of retribution over Rick's no-exceptions policy, illustrating fractures in the fragile peace. noted how Maggie's "dark side" turn and Daryl's unforgiving stance toward Saviors amplified the episode's bleak exploration of . Reel World Theology observed Negan's lingering influence in fueling cycles, contrasting Rick's hopeful vision. In post-2020 reviews tied to streaming revivals on platforms like and AMC+, the episode's themes continued to resonate within broader series on survival ethics. A 2021 Rotten Tomatoes ranking placed it among the top five episodes, reaffirming its suspense as timeless amid the franchise's expansions. Its viewership of over 5 million viewers underscored its cultural impact during the original airdate, influencing later discussions on in spin-offs.

Viewership

"Warning Signs" premiered on in the United States on October 21, 2018, drawing 5.04 million live viewers and a 1.9 rating in the 18-49 demographic, representing an 18% drop from the season 9 premiere's 6.08 million viewers. The marked another series low in the key at the time, amid ongoing viewership declines for the series following the conclusion of the storyline arc in season 8. In the , it aired on the next day, October 22, 2018. Delayed viewing boosted the episode's totals, with DVR adding approximately 1.1 million viewers to reach 6.14 million within the first week. The performance exceeded the season 9 average of 4.8 million live viewers, providing some stability during a period of broader franchise fatigue. The episode was released on home media as part of The Walking Dead: The Complete Ninth Season Blu-ray and DVD set on August 20, 2019. It became available for streaming on in the starting September 1, 2019, and on AMC+ following the platform's launch in June 2020. By 2025, amid franchise reboots like The Walking Dead: The Ones Who Live and expanded licensing deals, the episode saw a resurgence in streaming metrics on Netflix, contributing to over 700% increases in first streams for related titles and positioning the original series among Netflix's top-watched TV shows globally.

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