She built her career finding what people hide.

She spent ten years making sure she never looked too hard at home.

Forensic accountant Claire Ashford is very good at her job. She finds the numbers that don't add up, the accounts that shouldn't exist, the lies buried where no one thinks to look. In twelve years of professional practice, she has never walked away from an anomaly.

Until the night she finds a second phone in her husband's home office - and puts it back down.

By morning, her closest friend is dead. The police call it suspicious. Claire calls it impossible. Ryan is her husband of ten years, the man she trusts completely, the man who designed the house they live in with the same meticulous care he brings to everything.

But the deeper Claire digs, the more the picture refuses to stay the shape she needs it to be. The texts on the recovered phone aren't what she thinks. The files on her own work laptop contain something she didn't know she was looking for. And the night her friend died - the night Claire swore she stayed home - has a gap in it that GPS data can now measure to the minute.

The Perfect Couple's Secret is a tightly coiled psychological thriller about the particular horror of living beside someone who understood you completely - and used everything they understood.

The secret isn't what Claire thinks. It's worse. And she's been sitting on the evidence for years.

Perfect for readers who crave dark psychological twists-and for anyone who has ever told themselves there's probably an explanation, and chosen not to look for it.

One weekend. One marriage. One truth that changes everything.