Why Did Trench Release the Hiss in Control? The Full Lore Answer

Why did Trench release the Hiss in Control? Director Zachariah Trench did it because he was corrupted by its resonance during an expedition to Slidescape-36, which made him intensely paranoid. Under the Hiss’s influence, Trench became convinced that Dr. Darling’s benevolent entity, Hedron, was a hostile force trying to take over the Bureau, prompting him to open the slide projector to “save” the FBC.

The Man Sworn to Protect the Bureau

If you have spent any time wandering the shifting, brutalist corridors of the Oldest House, you know that Remedy Entertainment does not hand out easy answers. When I first played through Control, I spent hours collecting every scrap of paper and listening to every single one of Director Trench’s gravelly Hotline messages. The late, great James McCaffrey delivered those lines with a chilling, noir-like weariness that made the tragedy of the character stick with me long after the credits rolled.

We know Trench was a staunch defender of the Federal Bureau of Control (FBC). He lived and breathed the Bureau’s security. So, how did the very man sworn to protect the world from paranormal threats end up opening the front door for a malevolent cosmic force? Understanding what caused the Hiss invasion in Control requires diving deep into Trench’s mind, his deteriorating relationship with Dr. Casper Darling, and the insidious nature of resonance.

In this deep dive, we will unpack the tragic sequence of events that led to the downfall of the Oldest House, answer why did Trench release the Hiss in Control, and look at how this catastrophic breach sets the stage for the highly anticipated Control Resonant.

What caused the Hiss invasion in Control?

The Hiss invasion in Control was caused by Director Zachariah Trench opening a portal using a Slide Projector Object of Power. Trench, who had been secretly corrupted by the Hiss years prior, used a burned slide to unleash the resonance into the Oldest House.

To truly understand this breach, we have to look back at the Ordinary AWE (Altered World Event). Years before Jesse Faden ever set foot in the Oldest House, the FBC recovered a mysterious Slide Projector from her hometown of Ordinary. This projector was capable of opening doorways to alternate dimensions, known as “slidescapes.”

While Jesse and her brother Dylan found different slides, the Bureau eventually confiscated the device. Trench and his lead scientist, Dr. Casper Darling, began conducting expeditions into these alternate dimensions. It was during an expedition into “Slidescape-36” that the first seeds of the invasion were planted.

Why Trench Released the Hiss: Corruption, Paranoia, and Tragedy

Trench released the Hiss because he was corrupted by the resonance during an expedition and became intensely paranoid that Dr. Darling’s Hedron entity was trying to take over his mind. He viewed the Hiss as a necessary defense mechanism to save the Federal Bureau of Control.

The progression of Trench’s fall was a slow, agonizing slide:

• First came the Slide Projector Expedition in Slidescape-36.
• This was followed by Trench’s subtle corruption by the Hiss.
• The corruption fed his growing paranoia regarding Hedron.
• This ultimately led him to open the portal using the burned slide.

To Trench, his actions were not those of a villain. He honestly believed he was performing his final, desperate duty as Director. He was trying to protect his house. To fully answer why did Trench release the Hiss in Control, we need to trace the two events that broke him: what happened in Slidescape-36, and the personal tragedy that left him completely alone.

The Corruption of Slidescape-36

During the Bureau’s expeditions into the projector’s slides, Trench was exposed to a hostile resonance. This resonance was the Hiss. It did not immediately take control of him like it did the standard FBC agents we fight in the game.

Instead, it acted like a quiet, persistent earworm. It sat in the back of his mind, slowly feeding on his growing isolation and the heavy burden of his years as Director. Over time, this whisper twisted his thoughts, turning his protective instincts into a weapon.

The Tragedy of Susanna Trench

In the Hotline entry “Prime Candidates,” Trench explicitly reveals the profound personal loss that made him vulnerable. He admits he accidentally “took work home,” resulting in his daughter Susanna contracting a fatal paranatural illness. After civilian doctors failed to treat her and she died, his wife Kate divorced him.

With his home life completely shattered, Trench devoted everything to the FBC, leaving him totally isolated. The Hiss exploited this deep grief, his isolation, and his regrets, slowly distorting his sense of reality over several years.

Why did Trench think Hedron was a threat?

While Trench was harboring the Hiss, Dr. Casper Darling discovered a completely different resonance entity in Slidescape-36: Hedron (also known as Polaris). Darling brought Hedron back to the Oldest House, realizing its immense power.

Because the Hiss was already whispering in Trench’s ear, the Hiss viewed Hedron as its ultimate predator. The Hiss projected this fear onto Trench.

Trench’s inner logic, heavily warped by the Hiss, looked like this:

Trench’s defensive instincts + the Hiss’s whispers = “Hedron is a hostile invader taking over my Bureau.”

Trench watched Dr. Darling build massive Hedron Resonance Amplifiers (HRAs) and install them throughout the building. To Trench’s corrupted mind, this looked like a hostile takeover. He believed Darling had gone mad and was allowing an alien entity to bypass the Director’s authority.

In Trench’s eyes, the only way to neutralize Darling’s “invasion” of Hedron was to bring in a counter-force. He used the burned slide to let the Hiss in, believing it would cleanse the Bureau of Hedron’s influence.

How did the Hiss invasion affect the Oldest House?

The Hiss invasion triggered an immediate emergency internal lockdown, trapping the Bureau’s staff inside and corrupting most of them into hostile entities. Only those wearing Hedron Resonance Amplifiers (HRAs) managed to survive the initial wave of infection.

Once Trench turned on the projector, the Hiss flooded the Oldest House like a psychic plague. It rewrote the minds of almost every employee, turning them into floating, chanting shells.

The building’s automated safety systems immediately initiated a lockdown. This cut off the Oldest House from the rest of New York City, preventing the Hiss from escaping into the wild.

The Survival of the Few

The only reason anyone survived was Dr. Darling’s paranoia. Because Darling had distributed the HRAs, a small faction of FBC staff remained uncorrupted.

Interestingly, some entities within the House seemed entirely unaffected by the lockdown. The mysterious janitor, Ahti, seemed to navigate the chaos with ease, even leaving the building when he pleased.

To learn more about the strange forces at play, check out our guide on Who is Ahti the Janitor in Control?.

Ahti’s unique nature and his strange relationship with the Oldest House suggest he knew the invasion was coming, and he actively guided Jesse to clean up the mess Trench left behind.

How does the initial breach connect to Control Resonant?

The initial breach laid the groundwork for Control Resonant because Trench’s containment failure inside the Oldest House eventually broke through to the outside world, spilling the Hiss into New York City. The sequel explores the consequences of this disaster on a massive, metropolitan scale.

The progression of containment failure over the years shows how the crisis escalated:

• The Lockdown (2019) kept the Hiss contained, leading to an internal stalemate.
• This eventually caused a lockdown failure, triggering the NYC Breach (2026).

While Jesse Faden managed to cleanse many areas of the Oldest House and shut down the Slide Projector, the Hiss was never fully eradicated. The quarantine kept the threat contained, but it was a temporary fix.

The War for Manhattan in 2026

Remedy Entertainment is self-publishing Control Resonant, which is officially slated to launch on September 24, 2026. This highly anticipated sequel shifts the focus to Jesse’s brother, Dylan Faden. Dylan trades standard firearms for “the Aberrant”—an incredible, shape-shifting melee weapon.

The game expands beyond the brutalist walls of the Bureau into a massive, open-ended recreation of Manhattan. However, the city has been placed under a protective bubble because the paranormal threat has finally broken out.

This is where the direct cause-and-effect chain becomes critical. The chaos overtaking Manhattan in 2026 is a direct consequence of the decision Trench made in the basement of the Bureau back in 2019. By letting the Hiss inside the Oldest House, Trench set off a chain reaction that ultimately cracked the building’s internal containment, transforming a localized quarantine into a public catastrophe.

Key Takeaways from the FBC Downfall

To recap why did Trench release the Hiss in Control, here are the four lore points that tell the complete story:

• Trench was the catalyst: He was not evil, but a corrupted man who believed he was saving his life’s work.
• The Slide Projector was the key: The Object of Power allowed Trench to bypass the Oldest House’s formidable defenses.
• Hedron triggered the fear: The Hiss exploited Trench’s natural defensive instincts, turning him against Dr. Darling’s research.
• A temporary shield: The internal lockdown saved the world in 2019, but that shield has finally cracked heading into Control Resonant.

Ultimately, why did Trench release the Hiss in Control is the story of a man so shaped by grief, isolation, and slow paranormal corruption that his final act of protection became the Bureau’s greatest catastrophe.

What do you think caused the new breach in New York? Let us know your favorite lore theories in the comments below!

Frequently Asked Questions

Did Trench know he was corrupted by the Hiss?

No, Trench did not realize he was corrupted. The Hiss influenced his thoughts gradually, making him believe its whispers were his own logical conclusions and protective instincts.

Why did Trench release the Hiss in Control instead of simply isolating or removing Dr. Darling?

His Hiss-corrupted mind perceived Hedron — not Darling personally — as the existential threat. The resonance had convinced him the building’s foundations were compromised at a resonance level, making the Slide Projector the only tool he believed could “cleanse” what Darling had let in. Removing Darling would not have silenced the Hedron frequency already embedded in the Oldest House.

What happened to Zachariah Trench after the breach?

Trench died by suicide in his office shortly after releasing the Hiss. The Hiss-influenced Service Weapon compelled him to take his own life to clear the way for a new Director.

Why did Darling’s HRAs protect people from the Hiss?

The HRAs emitted a localized Hedron resonance. Because Hedron and the Hiss are opposing forces, the HRA acted as a shield, blocking the Hiss from rewriting the wearer’s mind.

Is the Slide Projector still active?

No, Jesse Faden managed to turn off the Slide Projector and secure it during the events of the first game, but the Hiss resonance already inside the building remained.

References

Control Fandom Wiki – Zachariah Trench: https://control.fandom.com/wiki/Zachariah_Trench

Control Fandom Wiki – Hiss Invasion: https://control.fandom.com/wiki/Hiss_invasion

Remedy Entertainment – Control Resonant: https://www.remedygames.com/games/control-2