Pinned Location. The Echo Line, #1

The green dot on your phone says he's at the office. The green dot is lying. Arden Cahill thought she had fixed her marriage. After her husband Nolan's emotional affair, they agreed to mutual location sharing for full transparency. For twenty-two months, Arden has drawn comfort from the green dot on her Find My app, proving her husband is exactly where he claims to be. But when a series of subtle anomalies-a dry gym towel, an unfamiliar coffee cup, and a six-hour period of perfect digital stillness-forces her to investigate, Arden makes a chilling discovery.
Nolan is using an $11.99-a-month app to spoof his GPS coordinates. He isn't at the office. He's at a gray Cape Cod nine miles away. It's a house with the same climbing roses as her own. A house where another woman, Petra, believes she is married to a man named Cole Brannick. A house where this woman wears an identical gold pavé ring with the exact same inscription as Arden's. As Arden meticulously applies her skills as an event planner to untangle the financial and digital architecture of her husband's double life, she realizes she hasn't just been replaced-she's been duplicated.
But Nolan is always one step ahead. He knows Arden's darkest professional secret-a forged client letter that saved her business-and is holding it over her in a terrifying stalemate of mutual blackmail. As the lies unravel and a dark history from Colorado surfaces, Arden must decide how far she is willing to go to tear down the counterfeit life her husband has built.