The Night Swim by Megan Goldin

Publisher's Synopsis

Ever since her true-crime podcast became an overnight sensation and set an innocent man free, Rachel Krall has become a household name – and the last hope for people seeking justice. But she’s used to being recognised for her voice, not her face. Which makes it all the more unsettling when she finds a note on her car windshield, addressed to her, begging for help.

The new season of Rachel’s podcast has brought her to a small town being torn apart by a devastating rape trial. A local golden boy, a swimmer destined for Olympic greatness, has been accused of raping the beloved granddaughter of the police chief. Under pressure to make Season Three a success, Rachel throws herself into her investigation – but the mysterious letters keep coming.

Someone is following her, and she won’t stop until Rachel finds out what happened to her sister twenty-five years ago. Officially, Jenny Stills tragically drowned, but the letters insist she was murdered. When Rachel uncovers startling connections between the two cases, past and present collide. What she finds will change not just the course of the trial, but the lives of everyone involved.