undertone 2026

The Undertone begins

Evy and Justin run The Undertone, a horror podcast that covers alleged supernatural events. Evy dismisses these as hoaxes, while Justin believes the phenomena are real. They record and discuss strange reports from Evy's home studio, hoping to uncover truth behind the stories.

Anonymous email and ten audio files arrive

An anonymous email arrives containing ten audio files and a cryptic string. They are played on the podcast, introduced as recordings by a couple named Mike and Jessa. Evy and Justin begin to suspect there might be more to these voices than mere hoaxes, fueling their curiosity.

Jessa's sleep talk is captured

In the first recording, Jessa sings London Bridge as she sleeps. Justin plays it backward and claims he hears 'Mike, kill all,' hinting that hidden messages may lurk in lullabies. Evy feels unsettled by the possibility of dangerous words hidden in familiar songs.

Baa, Baa, Black Sheep reversed

Evy experiments with more songs and discovers that reversing 'Baa, Baa, Black Sheep' yields 'lick the blood off.' The discovery unsettles her and deepens the sense that coded messages may be real and malevolent. She wonders if the music is summoning something from folklore.

Pregnancy revealed to mother

While at her mother's bedside, Evy reveals that she is six weeks pregnant. She confesses that she feels unfit to be a mother, expressing fear and self-doubt. The moment underscores the emotional stakes of motherhood amid a spreading horror.

Appointment at women's clinic

Deciding to seek medical guidance, Evy schedules an appointment at a local women's clinic. The plan marks a step toward autonomy and safety for herself and the unborn child. The decision occurs against the backdrop of escalating supernatural events.

Abyzou enters the narrative via recordings

Further recordings reveal Jessa speaking something that, when played backward, says 'come in, Abyzou.' Evy and Justin connect this demon to pregnancy and the disturbing events around them. The revelation introduces a folkloric antagonist central to the plot.

Supernatural phenomena intensify at home

Evy starts noticing increasingly strange phenomena: her still-unconscious mother appears to move, lights flicker, and a Virgin Mary statue reappears in new places. The house seems haunted, blurring lines between superstition and genuine danger. The tension mounts as the hauntings become more personal.

The demon's dark lore solidifies

Through research, Evy and Justin learn that Abyzou is a demon in Mediterranean and European folklore said to cause miscarriages and drive mothers to harm their own children. They realize the danger is intimately connected to Evy's pregnancy and perhaps to a future child. The stakes shift from abstract fear to a direct, personal threat.

The final warning in the recording

In the final recording, Jessa warns that someone listening must be warned, and Justin's reply attempts fail when the email bounces back to him. The sense of being watched intensifies as the messages grow more urgent. The audience feels the threat closing in around Evy and her unborn child.

Neighbor reveals the couple's fate

A caller claiming to be Mike and Jessa's neighbor reveals that the couple were found dead at their home with plastic bags over their heads, and that Jessa was pregnant at the time of death. The autopsy confirms the pregnancy, linking the tragedy to the demonic backstory Evy and Justin uncovered. The revelation adds a chilling real-world consequence to the haunting.

Demand to speak to 'Mary'

Another caller demands to speak to 'Mary,' the name Evy has long imagined for her hypothetical child, and refuses to relent when Justin says there is no such person. The persistent demand reinforces the sense that the demon is targeting the unborn and anyone associated with Evy. The tension escalates as the calls continue.

Abby's desperate call ends in tragedy

A final caller named Abby begs for help calming her incessantly crying child, and her desperation culminates in the murder of the infant. Evy and Justin plead with her to stop, underscoring the horrific reach of the malevolent force. The act demonstrates the tangible danger imposed on ordinary families by the occult threat.

Evy learns of her mother's death

Evy confesses that her mother has died, feeling indirectly responsible for not praying for her. The revelation ties personal guilt to the escalating haunting and the burden of faith under duress. The loss deepens her emotional vulnerability as the nightmare closes in.