Dual timelines reveal the real reason a mother was forced to leave her daughter in the 80s, in this Nero prize-winning novel inspired by real-life events

The debut novel by Claire Lynch, which won the Nero Gold prize for fiction last month, unfolds across two timelines as it tells of family secrets and a bitter divorce. The first is set in 2022, when Heron, an older man, gets a terminal cancer diagnosis. He seems to be coping well until he climbs into a freezer at his local supermarket and has to be coaxed out by staff. Heron likes his routine and prefers to keep to himself. But he is also a practical man and so he enlists his only daughter, Maggie, to help him go through his house and sort out any paperwork.

Maggie is close to her dad who raised her alone after her mother, Dawn, deserted the family – or so Maggie has been told. But while sifting through Heron’s papers, she learns the real reason for her mother’s estrangement. The second timeline unfolds in 1982, when young mum Dawn falls in love with a schoolteacher named Hazel. Family court judges took a dim view of homosexuality in the 1980s, working under the belief that children would be damaged by being raised by same-sex parents. And so a devastated Dawn is separated from three-year-old Maggie as Heron is given full custody after their divorce.