The corpse of a shabbily dressed young woman has been discovered in the mud flats of the Thames at low tide. Police assume she's a prostitute, but Dr. Watson suspects something more and goes to his old friend Holmes, now retired and at very loose ends.

A veil of sadness lies over the oppressively hot summer days. Cleo dives into daydreams with her cousins, the girls share secret signs and rituals. Flowing gently, in impressionistic images, the empty space that the death of Cleo’s sister has left in the family is poetically encircled.

Over the course of her stay at the remote residence, Ana becomes more and more familiar with Holden’s idiosyncratic methods that require the participating artists to abandon their own identities and live emotionally and psychologically as their characters. Captivated by her artistic investigation, Ana immerses herself wholly into the method and starts living as Violeta, until her fiction loses control.