East Anglia, 1645. Martha Hallybread, a midwife, healer and servant , is a trusted figure in her beloved coastal village of Cleftwater - even though no one has ever heard her speak.
One day, the peaceful atmosphere is disrupted by the arrival of a witch-hunter, and suspicion threatens to tear the community apart. When Martha is drawn into the search, she finds herself torn between protecting herself or her friends. As the tide of suspicion builds and events hurtle towards a terrible reckoning, Martha's silence is a choice that could cost her everything.