The Forgotten Waltz is a memory of desire: a recollection of the bewildering speed of attraction, the irreparable slip into longing.

In Terenure, a pleasant suburb of Dublin, in the winter of 2009, it has snowed. Gina Moynihan, girl about town, recalls the trail of lust and happenstance that brought her to fall for ‘the love of her life’, Seán Vallely. As the city outside comes to a halt, Gina remembers the days of their affair in one hotel room or another: long afternoons made blank by bliss and denial.

Now, as the silent streets and the stillness and vertigo of the falling snow make the day luminous and full of possibility, Gina walks through the weather to meet a girl she calls his ‘beautiful mistake’: Seán’s fragile, twelve-year-old daughter, Evie.