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“The Unknowing Mirror: An Edwardian Tale of Horror and Intrigue”

Big Finish celebrates 50 years since the introduction of the shape-shifting Zygons with a special audio series titled Zygon Century. Its opening set, Infiltration, plays out across three chapters spread throughout three decades of the 20th century. It’s one of my most anticipated releases of 2025, so I hope it’s worth the wait.

The Unknowing Mirror sets the tone for Zygon Century with a haunting Edwardian-era story that melds Poe-like dread with Doylist investigative charm. Set in 1901 London, it introduces Herbert Scott, an occult investigator with shades of Sherlock Holmes, and Father Felix Cromwell, his steadfast and curious companion. Together, they unravel the mystery of a possessed young woman who suffers from terrifying dream visions and a fractured personality.

This opening instalment successfully establishes a moody, gothic atmosphere, pulling listeners into its world of dimly lit drawing rooms, eerie whispers, and secrets lurking in the shadows.

A Human-Focused Story

Unlike many Zygon tales, this story leans heavily on human drama and psychological tension, with the shape-shifting aliens making only fleeting appearances. The Zygons, more akin to spectres than extraterrestrials here, fit seamlessly into the occult overtones of the narrative, which feels like it could have been penned in the early 20th century.

The focus on character relationships drives the story. Scott’s obsessive curiosity and brusque manner contrast well with Cromwell’s moral grounding, creating a dynamic reminiscent of Holmes and Watson. Their interaction with the young woman at the centre of the mystery provides emotional depth, while her guardian’s hostility adds an extra layer of tension.

Standout Characters

Mrs Maloney, initially a minor figure, emerges as a compelling character who adds intrigue to the narrative. Her transformation from bystander to pivotal player enhances the story's complexity, leaving listeners wondering about her true motivations.

The young woman’s struggle with her supposed possession is both unsettling and tragic, and the ambiguity surrounding her condition keeps the mystery alive.

A Slow Burn

While the story effectively builds its eerie atmosphere, it doesn’t fully capitalise on its premise until the climax. The Zygons remain elusive for most of the runtime, their presence hinted at rather than explored. This restraint creates suspense but may leave some listeners yearning for a more immediate confrontation with the alien threat.

The final sequence, set on the Cornish coast, brings the tension to a head. The revelation of a Zygon ship and the morbid twist involving Edith lend the story a dark, memorable conclusion. The ambiguity surrounding who is a Zygon and who isn’t adds to the intrigue and sets up the next chapter in the series effectively.

The Verdict: A Promising Start

The Unknowing Mirror is an atmospheric and character-driven opener to Zygon Century. Its blend of gothic horror, psychological drama, and Zygon mystery offers a fresh take on the iconic villains, even if it holds back on action and stakes until the final act. Fans of slow-burn storytelling and period drama will find much to enjoy here, while the tantalising setup for future chapters ensures it’s a must-listen for those eager to uncover the full scope of the Zygon plot.

📝77/100