In the opening scene of "Catch Him by All Means," Detective Park Hae-young is seen in the present day, reflecting on the unsolved case of a serial killer who has been active for years. He is haunted by the memories of the victims and the impact the case has had on his life and career. As he reviews old case files, he receives a call from his colleague, who informs him that a new lead has emerged regarding the killer.

The narrative shifts to the past, where the story focuses on the investigation led by Detective Lee Jae-han, who is working on the same case. Jae-han is shown interviewing witnesses and gathering evidence, but he is frustrated by the lack of progress. He is determined to catch the killer, driven by a sense of justice and the desire to protect potential victims. His emotional state is tense, as he feels the weight of the unsolved case pressing down on him.

As the episode progresses, Hae-young receives a mysterious call from Jae-han through the walkie-talkie, which allows them to communicate across time. Jae-han shares crucial information about the killer's next target, a young woman named Kim Soo-yeon. Hae-young, realizing the urgency of the situation, rushes to warn her. The tension builds as he races against time, knowing that every second counts.

Meanwhile, Jae-han continues to gather clues in the past, interviewing Soo-yeon's friends and family. He learns about her daily routine and the places she frequents. His determination to save her intensifies, and he becomes increasingly frustrated with the limitations of his time period, feeling helpless as he cannot directly intervene to protect her.

Back in the present, Hae-young arrives at Soo-yeon's location just in time to see her being followed by a suspicious man. He confronts the man, who turns out to be the killer. A tense confrontation ensues, with Hae-young trying to subdue the man while also ensuring Soo-yeon's safety. The struggle is physical and chaotic, with Hae-young using all his training to fight off the attacker.

In a parallel sequence, Jae-han is shown in the past, piecing together the clues he has gathered. He realizes that the killer has a specific pattern and deduces where the next attack might occur. He rushes to the location, hoping to intercept the killer before it's too late. His urgency is palpable, as he races against the clock, driven by the fear of losing another victim.

As the climax approaches, Hae-young manages to overpower the killer in the present, but not without sustaining injuries himself. He calls for backup, ensuring that the killer will be apprehended. Meanwhile, Jae-han arrives at the scene in the past, but he is too late to prevent the attack on Soo-yeon. He finds her in a critical state, and his heart sinks as he realizes he could not save her.

The episode concludes with both Hae-young and Jae-han grappling with the consequences of their actions. Hae-young is relieved that he managed to catch the killer, but he is haunted by the fact that he could not save Soo-yeon in the past. Jae-han, filled with regret, vows to continue his pursuit of justice, determined to prevent future tragedies. The emotional weight of their experiences lingers, setting the stage for their ongoing battle against time and fate.

In the ending of "Catch Him by All Means," the team successfully apprehends the serial killer, but not without significant emotional turmoil. Lee Jae-han, who has been deeply affected by the case, faces the consequences of his actions and the weight of his past. The episode concludes with a sense of unresolved tension as the characters grapple with their experiences and the lingering impact of the case.

As the episode unfolds, the tension escalates when the team, consisting of Lee Jae-han, Park Hae-young, and Kim Bum-joon, races against time to catch the serial killer who has been terrorizing the city. The clock is ticking, and the stakes are high. The trio works tirelessly, piecing together clues from the past and present, driven by their commitment to justice and the desire to save potential victims.

In a pivotal scene, Jae-han receives a crucial piece of information that leads them to a potential location of the killer. The atmosphere is thick with urgency as they prepare to confront the suspect. Jae-han's internal struggle is palpable; he is haunted by memories of past failures and the lives lost due to his inability to act in time. His determination to prevent further tragedy fuels his actions, but it also weighs heavily on him, creating a conflict between his professional duty and personal demons.

As they close in on the suspect, the tension reaches a boiling point. The team splits up to cover more ground, and Jae-han finds himself in a high-stakes confrontation with the killer. The scene is fraught with danger, and the emotional stakes are heightened as Jae-han faces the man who has caused so much pain. The confrontation is intense, filled with raw emotion as Jae-han channels his anger and frustration into a desperate attempt to bring the killer to justice.

In a climactic moment, Jae-han manages to apprehend the killer, but not without a struggle. The physical altercation is brutal, showcasing Jae-han's desperation and the weight of his past failures. As the dust settles, the killer is in custody, but the victory feels bittersweet. Jae-han is left grappling with the emotional fallout of the encounter, reflecting on the lives that have been irrevocably changed by the killer's actions.

Meanwhile, Park Hae-young and Kim Bum-joon are left to process the aftermath of the case. Hae-young, who has been deeply invested in the investigation, feels a mix of relief and sorrow. The emotional toll of the case lingers, and he is left contemplating the fragility of life and the impact of their work. Bum-joon, who has been a steadfast ally, also feels the weight of the case, recognizing the scars it has left on each of them.

As the episode draws to a close, the characters are left in a state of reflection. Jae-han, despite having caught the killer, is haunted by the memories of those who were lost. The emotional scars run deep, and the victory feels hollow in light of the pain they have all endured. The final scenes capture the somber reality of their work, emphasizing the complexities of justice and the personal toll it takes on those who seek it.

In the end, Jae-han is left to confront his past and the choices he has made, while Hae-young and Bum-joon stand by him, united in their shared experiences. The episode concludes with a sense of unresolved tension, leaving the audience to ponder the lasting impact of their actions and the emotional weight of their pursuit of justice.

In the episode "Catch Him by All Means" from the series Signal, there is no post-credit scene. The episode concludes without any additional content after the credits roll. The focus remains on the intense narrative and character developments throughout the episode, leaving no further scenes or teasers for viewers to engage with after the main story concludes.

The phone calls between Park Hae-young and Lee Jae-han serve as a crucial narrative device that bridges the past and present. They highlight the urgency of solving the case and the emotional weight of their connection, as Hae-young grapples with the implications of Jae-han's warnings and the pressure to prevent future tragedies.

In this episode, Kim Hye-soo showcases her determination and resilience as she navigates the complexities of the case. Her character evolves as she becomes more proactive, taking initiative in the investigation and demonstrating her commitment to justice, which deepens her bond with Hae-young and Jae-han.

The past is a pivotal element in the investigation, as Hae-young and Jae-han uncover connections between the current murders and previous unsolved cases. This exploration of past events not only drives the plot forward but also reveals the emotional scars left on the characters, particularly Hae-young, who is haunted by the implications of their findings.

The relationship between Hae-young and Jae-han is depicted as one of mutual respect and urgency. Hae-young's reliance on Jae-han's insights from the past showcases a deepening trust, while Jae-han's protective instincts highlight his commitment to ensuring Hae-young's safety and success in the investigation.

The emotional stakes are high for all characters involved, particularly for Hae-young, who feels the weight of responsibility to prevent further loss of life. Jae-han's desperation to change the past adds a layer of urgency, while Hye-soo's determination to seek justice for the victims drives her actions, creating a tense atmosphere filled with personal and professional stakes.

In "Catch Him by All Means," the sixth episode of Signal, there are several elements that may be considered objectionable or upsetting for children or sensitive viewers.

1. Violence: The episode contains scenes depicting crime and violence, including the aftermath of violent acts, which may be distressing.

2. Murder Investigation: The central plot revolves around a murder case, which involves discussions and depictions of crime scenes that could be unsettling.

3. Emotional Distress: Characters experience significant emotional turmoil, including grief and fear, which may resonate deeply with sensitive viewers.

4. Tense Situations: The episode features high-stakes scenarios that create a sense of suspense and anxiety, potentially causing discomfort.

5. Themes of Abduction: There are references to abduction and the psychological impact it has on victims and their families, which can be particularly distressing.

These elements contribute to a darker tone in the episode, making it less suitable for younger audiences or those who are sensitive to such themes.