Isma quitte Londres pour les États-Unis afin de reprendre ses études de sociologie, interrompues à la mort de sa mère. C’est à elle qu’avait alors incombé la charge de ses frère et sœur jumeaux, plus jeunes, Aneeka et Parvaiz. Aujourd’hui, l’une poursuit son cursus en droit, l’autre vient de rejoindre les rangs de l’État islamique. Il ravive ainsi un traumatisme familial puisque, des années auparavant, leur père les a abandonnés pour le djihad. Lorsque Isma rencontre Eamonn, jeune Britannique issu d’une tout autre frange de l’immigration pakistanaise, le destin de leurs deux familles s’entrechoque et s’embrase.

Isma is free. After years spent raising her twin siblings in the wake of their mother's death, she is finally studying in America, resuming a dream long deferred. But she can't stop worrying about Aneeka, her beautiful, headstrong sister back in London - or their brother, Parvaiz, who's disappeared in pursuit of his own dream: to prove himself to the dark legacy of the jihadist father he never knew. Then Eamonn enters the sisters' lives. Handsome and privileged, he inhabits a London worlds away from theirs. As the son of a powerful British Muslim politician, Eamonn has his own birthright to live up to - or defy. Is he to be a chance at love? The means of Parvaiz's salvation? Two families' fates are inextricably, devastatingly entwined in this searing novel that asks: what sacrifices will we make in the name of love?