Miss Pettigryu, doch vikariya i skromnaya guvernantka, ostavshayasya bez raboty, ustraivaetsya na sluzhbu k molodoy aktrise i srazu popadaet v svetskoe obschestvo Londona 1930-h godov: roskoshnye nochnye kluby, shikarnye naryady, neveroyatnye muzhchiny i lyubovnye intrigi. Tut by ey opeshit i sbezhat k privychnomu – skuchnomu, bedstvennomu, no proverennomu – suschestvovaniyu, no zhelanie vzglyanut na bomond ne na ekrane kinoteatra pobezhdaet. I miss Pettigryu ostaetsya. Ona esche ne znaet, chto odin etot den izmenit vsyu ee zhizn.
«Odin den miss Pettigryu» – udivitelno zhivaya, yarkaya istoriya, pokoryayuschaya chitatelya tonkim yumorom, zhiznelyubiem i zhenskoy mudrostyu. Imya Uinifred Uotson stoit v odnom ryadu angliyskoy literatury vmeste s Pelamom Grenvillom Vudhausom i Dzheromom Klapkoy Dzheromom.