The Beach House (2020) Timeline Explained – Every Event in Order

Mitch drowns himself after becoming infected by the microbes. While swimming, the infection that has already affected Jane takes hold of him, causing disorientation and extreme behavior that leads him to intentionally drown in the ocean.

Foreshadowing: Earlier, Mitch notices the strange water texture and feels something is off in the area before going for his swim.

• mitch
• drowning
• infection
• beach house

The fog is the carrier of the microbial infection released by global warming. The emergency broadcast explains that ancient microbes preserved in underwater rocks were thawed and released, and they became airborne through the thick fog that blankets the area.

Foreshadowing: After the group consumes edibles, Jane steps outside and a thick fog begins forming while she coughs violently.

• fog
• microbes
• infection
• global warming

Randall attacks Emily because the infection has progressed significantly in his body. He convulses, vomits a squid-like creature, his eyes turn white, and he becomes violently aggressive, losing his human faculties as the microbial infection takes complete control.

Foreshadowing: Randall becomes sick after returning from the beach, and Emily notices strange patterns in the sink water before his condition worsens.

• randall
• attack
• infection
• violent
• transformation

Emily is dragged out to sea by a massive wave after the infection completes its course. The ambiguous ending suggests she either drowns or undergoes a transformation into something inhuman, much like the other infected victims, leaving her fate uncertain.

Foreshadowing: She previously breathed in the fog while trapped in the tide pool and experiences hallucinations about the microbes as dawn breaks.

• emily
• ending
• wave
• transformation
• infection

The glowing microbes are ancient organisms preserved in underwater rocks that were released due to global warming. The emergency broadcast confirms they came from rocks that thawed, and they spread through the water and fog, causing the infection that transforms people.

Foreshadowing: While high on edibles, Mitch notices the strange texture of the water and everyone sees glowing microbes on the beach and in the trees.

• microbes
• glow
• global warming
• infection
• ocean

Jane is locked in the house after she becomes catatonic and then begins stalking with milky white eyes, showing clear signs of the infection. Emily locks her inside to contain the threat as Jane transforms into a violent, infected being.

Foreshadowing: Emily wakes to find Jane catatonic in the kitchen with skin lesions, signaling the infection's early spread.

• jane
• locked
• infection
• catatonic
• transformation

The town appears empty because the microbial outbreak has already spread through the area. The emergency broadcast confirms the infection is a widespread environmental disaster affecting the entire region, likely forcing an evacuation before the main characters arrive.

Foreshadowing: The town looks eerily deserted when Emily and Randall first arrive at the beach house.

• town
• empty
• deserted
• evacuation
• infection

The outbreak is caused by ancient microbes released from underwater rocks due to global warming. These microorganisms were preserved in the rocks for an unknown period and, once thawed, contaminated the water and became airborne through the fog, infecting anyone who breathes them in.

Foreshadowing: The group notices strange environmental phenomena shortly after arriving, including glowing water and unusual fog formation.

• outbreak
• global warming
• microbes
• emergency alert

The strange water patterns are caused by the microbial contamination. The same microbes visible as glowing specks in the ocean and on the beach have infiltrated the water supply, creating unusual textures and movements that signal the infection's spread.

Foreshadowing: Mitch notices the strange water texture while high on edibles before the group fully understands the danger.

• water
• sink
• strange
• microbes
• infection

Emily realizes the scuba tanks in the basement can provide clean, filtered air independent of the infected fog outside. She plans to use them to breathe safely while waiting for morning, when the fog reportedly lifts and the threat subsides.

Foreshadowing: Emily discovers the tanks while searching the basement for supplies and hears the warning to avoid breathing the fog.

• scuba tanks
• oxygen
• breathing
• fog
• survival

The worm-like creature is another manifestation of the microbial infection entering Emily's body through the Portuguese man o' war sting. It represents the infection taking hold in her system, similar to how it transforms other victims.

Foreshadowing: Emily steps on the jellyfish and gets stung before noticing the creature in her wound.

• worm
• sting
• wound
• infection
• jellyfish

Randall vomits a squid-like creature, which is the physical manifestation of the infection's progression in his body. This horrifying moment shows the infection has reached an advanced stage, transforming him into something non-human before his final violent attack.

Foreshadowing: Randall's sickness intensifies throughout the night, with worsening symptoms leading to this extreme transformation.

• randall
• vomit
• squid
• creature
• transformation