Alison Woods, a deaf caterer, faces the challenge of navigating a dangerous criminal investigation using her lip-reading skills, which puts her in peril as she becomes deeply involved with the gang and struggles to keep her identity secret. She also juggles family struggles and the fallout of a long-term relationship while balancing the pressures of undercover work.

Alison forms an unexpected and dangerous bond with Liam Barlow, the gang’s newest recruit. This relationship complicates her role in the investigation, threatens to expose her true identity, and pulls her further into the criminal world, adding tension and emotional complexity to the plot.

Alison's lip-reading skills are central to the investigation as she deciphers secret exchanges between criminals, making her an invaluable asset to the police. Her ability to read lips allows the police to gather crucial intelligence on the gang's activities, driving the story forward.

The series spotlights the power of communication through a deaf lens, redefining the crime drama genre by focusing on Alison's perspective as a deaf woman. It highlights her intelligence, determination, and the unique challenges she faces, offering an authentic and fresh contribution to the genre.

Key themes include deception, danger, resilience, and the complexity of human relationships under pressure. The story also explores the intersection of disability and crime investigation, the power of communication beyond spoken language, and the personal costs of undercover work.