When Elspeth returns from New York to her hometown of Geelong, it's not for a holiday - it's because her mother, Simone, has vanished without a trace.

Elspeth moves in with her sister, Aoife, and old wounds reopen as they circle around their father's death years earlier. But Elspeth's own behaviour soon unsettles those around her. She's jittery, secretive - and the police begin to wonder if she's hiding something more than grief.

Desperate to prove her innocence, Elspeth teams up with Steve, a local crime reporter, to hunt for the truth. Their search leads them to Simone's unfinished memoir, which includes letters that expose long-buried betrayals and dangerous secrets.

But as the investigation tightens, so does the net around Elspeth. Is she an investigator, a daughter, or something more dangerous?

Because in a family built on lies and betrayal, digging too deep can be deadly.