Everyone has a dark side.

Fern Castle works in her local library. She has dinner with her twin sister Rose three nights a week. And she avoids crowds, bright lights, and loud noises as much as possible. Fern has a carefully structured life and disrupting her routine can be . . . dangerous.

When Rose discovers that she cannot fall pregnant, Fern sees her chance to pay her sister back for everything Rose has done for her. Fern can have a baby for Rose. She just needs to find a father. Simple.

Fern's mission will shake the foundations of the life she has carefully built for herself and stir up dark secrets from the past, in this quirky, rich, and shocking story of unexpected love.

Praise for The Good Sister

'This novel is excellent on several fronts: characterisation, setting, structure, and pacing are all done with care and skill' - Sydney Morning Herald

'A great read. It's laugh-out-loud funny. It's as unpredictable as it is heartwarming. If you enjoyed Eleanor Oliphant is Completely Fine, you will find it hard to put down' - Herald Sun