The plot centers on a woman whose whole life changes one day upon her taking home a set of pictures, and finding one that does not belong.

She finds an odd one in the pack: a mysterious picture from perhaps twenty years ago, showing four strangers she can't identify.

There are others interested in both her husband's past and that photo, including Eric Wu, a fierce, silent killer who will not be stopped from finding his quarry, no matter who or what stands in his way.

Her world turned upside down, filled with doubts about her herself and marriage, Grace must confront the dark corners of her own tragic past as she struggles to learn the truth, find her husband, and save her family.

Following the success of their adaptation of No Second Chance, French TV channel TF1 commissioned a mini-series based on Just One Look, which premiered in June 2017 in Switzerland (RTS Un), Belgium & Luxembourg (RTL-TVI) and France, Monaco & Andorra (TF1).