The straphangers of Ealing Broadway station are familiar with Mary O’Connor, the woman who appears every day to watch the droves of busy commuters. But Mary never asks anything from anyone. She only holds out a sign bearing a heartrending message: Come Home Jim.

While others pass her by without a thought, Alice, a junior reporter at the Ealing Bugle, asks Mary to tell her story. Many years ago, Mary met the charming and romantic Jim Whitnell. She was certain she’d found her other half, until one day he vanished without any explanation. But Mary believes that Jim isn’t a cad, that he truly loved her and will return—especially because she’s recently received grainy phone calls from him saying he misses her.

Touched but also suspicious, Alice quietly begins her own investigation into Jim’s disappearance, unraveling a decade-long story filled with desire, heartbreak, and hope.