A mysterious flock of red birds has descended over Birch Hill. Recently reinvented, it is now home to an elite and progressive school designed to shape the minds of young women. But Eliza Bell – the most inscrutable and defiant of the students – has been overwhelmed by an inexplicable illness.

One by one, the other girls begin to experience the same peculiar symptoms: rashes, fits, headaches, verbal tics, night wanderings. Soon Caroline – the only woman teaching – begins to suffer too. She tries desperately to hide her symptoms but, with the birds behaving strangely and the girls’ condition worsening, the powers-that-be turn to a sinister physician with grave and dubious methods.

Caroline alone can speak on behalf of the students, but only if she summons the confidence to question everything she’s ever learnt. Does she have the strength to confront the all-male, all-knowing authorities of her world and protect the young women in her care?

Distinctive, haunting, irresistible, The Illness Lesson is an intensely vivid debut about women's minds and bodies, and the time-honoured tradition of doubting both.