The episode opens with the Sinclair family preparing for a quiet Fourth of July celebration on their private island. Cadence Sinclair Eastman, the protagonist, is reflecting on the events of the previous summer, specifically the Fourth of July of Summer 2016. The Sinclair sisters--Penny, Carrie, and Bess--are each trying to win back their father Harris Sinclair's approval amid financial difficulties. Penny is overspending, Bess claims to have nothing despite a trust fund, and Carrie admits to Harris that she drained her savings to cover a problem involving her brother Johnny. Harris is visibly disappointed and controlling, setting the tense family atmosphere.

At the same time, Carrie rejects a marriage proposal from Ed Patil, her boyfriend, to appease Harris, who disapproves of their relationship. Carrie cannot explain her decision to Ed, who is confused and hurt. Ed insists that Johnny's problems should not affect their relationship, but Carrie's loyalty to her father and the Sinclair family's reputation forces her to end things with Ed. This decision highlights the Sinclair family's power dynamics and the pressure on the daughters to conform to their father's wishes.

Meanwhile, the younger generation--the Liars--throw their own party on the island. Cadence, still struggling with her feelings for Gat Patil, gets drunk and flirts with several boys in an attempt to move on. Gat reveals to Cadence that he has broken up with his girlfriend, and they share a romantic moment, hinting at a possible rekindling of their relationship. Mirren Sinclair, another member of the Liars, has a flirtatious encounter with a teenage water taxi driver named Ebon. Initially annoyed by him, Mirren warms up and they share kisses, establishing a new romantic subplot.

Johnny Sinclair's secret becomes a central focus when Cadence unlocks his phone and discovers a blackmail video from Blake. The video shows Johnny violently assaulting another boy, revealing a dark and violent side to Johnny that has been hidden from the family. This discovery adds tension and mystery to the episode, as it explains some of the financial and emotional strain on the Sinclairs and the reasons behind Carrie's sacrifices.

At the party boat, Gat, Johnny, and Mirren arrive together, leaving Katie Sinclair feeling isolated and hurt. Johnny and Mirren playfully taunt Gat, who looks apologetic but cannot help staring at Katie. Gat gets drunk and dances with the others, but Katie becomes furious and leaves the party. This sequence highlights the complicated interpersonal dynamics and jealousy within the group.

Returning to the island, Penny and Bess engage in their usual quarrel, which escalates until their mother, Tipper Sinclair, admonishes them to behave. Penny blames Tipper for the family's inability to communicate openly about their feelings. This confrontation reveals the underlying family tensions and the emotional distance between the Sinclairs.

The episode ends with Cadence finding solace in conversations with the ghosts of her friends, who reassure her of their shared responsibility for past events. Secondary plot lines resolve with Penny confessing to infidelity, Bess successfully showcasing Mirren's art, the revelation of the Liars' involvement in Rosemary's death, and Cadence deciding to wear a birthday gift from Gat as she departs. These developments set the stage for future conflicts and deepen the mystery surrounding the Sinclair family and the Liars.

At the end of We Were Liars Season 1, Episode 4, a fire engulfs the Sinclair family home. Cady is thrown outside by an explosion and suffers a head injury, while Johnny, Mirren, and Gat are trapped inside and perish. It is revealed that throughout the summer, Cady has been interacting with the ghosts of the other Liars, making her the sole survivor. After uncovering the truth, Cady confronts her grandfather Harris, who pressures her to accept her inheritance, but she chooses to leave the Sinclair legacy behind and escape on her own, rejecting the family's fairy tale.

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The episode builds to a climactic moment as the Sinclair family home catches fire. Johnny and Mirren become trapped on the upper floors, unable to escape the rapidly spreading flames. Gat, noticing Cady's absence, rushes back inside to find her. Meanwhile, Cady makes her way to the boardwalk, expecting to meet the others, but finds no one there. Suddenly, a gas main explodes, causing a massive blast that throws Cady backward and ignites the house fully.

Cady suffers a head injury from the blast and is knocked unconscious or disoriented. As she recovers, she realizes the devastating truth: Johnny, Mirren, and Gat did not survive the fire. The interactions she believed she had with them all summer were actually with their spirits. This revelation reframes the entire summer's events, showing that Cady has been alone, haunted by the ghosts of her friends.

Following this, Cady has a tense conversation with her grandfather Harris. While the public explanation for the fire is faulty wiring, Harris knows the real cause and uses this knowledge to coerce Cady into accepting her role as the Sinclair family heir. He threatens to expose the truth if she refuses. Despite this pressure, Cady firmly rejects the Sinclair family's legacy and the expectations placed on her. She declares she is "just really not into fairytales anymore" and decides to leave the island, stealing the family boat to escape.

The episode closes with a poignant scene involving Aunt Carrie and the ghost of Johnny. Carrie prepares to leave Beechwood but encounters Johnny's spirit, who says he cannot leave. This leaves an open question about the fate of the spirits and sets up potential future storylines.

Fates of main characters at the end:

• Cady Sinclair: The sole survivor of the fire, she escapes the Sinclair family legacy and leaves the island on her own terms.
• Johnny Sinclair: Trapped in the fire and dies; his ghost remains on the island, unable to move on.
• Mirren Sinclair: Also trapped and perishes in the fire.
• Gat Patil: Dies in the fire while trying to find Cady.
• Harris Sinclair: Survives and attempts to control Cady through threats.
• Aunt Carrie: Survives and encounters Johnny's ghost, hinting at unresolved family and supernatural ties.

This detailed ending reveals the tragic consequences of the Sinclair family's secrets and the supernatural elements entwined with their story, emphasizing themes of loss, legacy, and the desire to break free from destructive family cycles.

For "We Were Liars," Season 1, Episode 4 (2025), there is no specific mention in the available sources of a post-credit scene following this episode. The detailed plot discussions and reviews focus on the episode's content and foreshadowing of later events, particularly the fire that becomes central to the series' climax, but none indicate an additional scene after the credits of Episode 4.

The significant post-episode content and revelations, including the fire and its consequences, are primarily discussed in the series finale rather than Episode 4. The finale includes a powerful closing scene between Aunt Carrie and the ghost of her son Johnny, but this is part of the main episode, not a post-credit scene.

Therefore, Episode 4 does not have a post-credit scene; the narrative developments and foreshadowing it contains are integrated into the episode itself without an extra scene after the credits.

Johnny is hiding a violent incident where he punched another boy repeatedly, as revealed by a blackmail video from Blake. This secret causes tension and suspicion among the characters, especially Cadence, who discovers the video on Johnny's phone and becomes increasingly suspicious of him and Mirren keeping bigger secrets about the previous summer's events.

In Episode 4, Cadence becomes suspicious of Johnny after learning he lied about what happened at Tipper's funeral. She investigates by unlocking his phone and watching a disturbing video of Johnny's violent behavior. This confrontation leads to Johnny chasing after Cadence as she starts to recall suppressed memories, culminating in her passing out from the emotional and mental strain.

During the Fourth of July in the present timeline (Summer 17), the Sinclair family prepares for their usual celebration. Cadence shares memories of the previous year's Fourth of July (Summer 16), including Johnny's anger at seeing his tennis teammates and the tensions that arise. The episode ends with fireworks and Cadence's emotional breakdown after confronting Johnny and uncovering secrets.

Episode 4 highlights the Sinclair sisters--Penny, Carrie, and Bess--competing for their father Harris's approval. There is tension over financial issues, such as Penny overspending and Carrie having to cover for Johnny's school incident, which strains their relationships. Additionally, a fight over Tipper's black pearl necklace escalates, leading Harris to harshly reprimand the sisters and cut them off financially.

Mirren is involved in romantic developments, particularly with Ebon, as their initial annoyance turns into flirtation and kisses. She is also implicated in the secrets surrounding Johnny, as Johnny's rival Blake has been sexting her, which provokes Johnny. Mirren's interactions and secrets contribute to the unfolding mystery and tension among the characters.

The TV show "We Were Liars" is not family-friendly due to several mature themes and content. Here are some potentially objectionable or upsetting aspects that might occur:

1. Violence: The series includes scenes of physical violence, such as a teen beating up a rival and leaving them for dead, which could be disturbing for children or sensitive viewers.

2. Emotional Abuse: Characters experience emotional abuse, particularly from their parents, which can be distressing to watch. For example, a mother emotionally abuses her daughter regarding her physical appearance.

3. Substance Abuse: Cadence struggles with drug addiction after her accident, which is a mature theme not suitable for younger audiences.

4. Racism: The show includes racist remarks directed at certain characters, which can be upsetting.

5. Family Dynamics: The series explores complex and often toxic family relationships, including infidelity, blackmail, and competition for inheritance, which may not be suitable for children.

6. Mature Themes: The show touches on themes of power, money, and lust, which are not appropriate for younger viewers. Additionally, there are mentions of extramarital affairs and financial troubles within the family.

Overall, while the show can be engaging for adult audiences interested in psychological thrillers and family dramas, it is not suitable for children or sensitive viewers due to its mature content.