A dance show at the Gap swimming pool? That's the unusual proposition of this reverie in troubled waters by Nathalie Pernette. We dive in headfirst.

Into the nocturnal silence of a deceptively tranquil pool enter four women dressed in flowing black gowns. Are they washerwomen, undines, mere passers-by? Little by little, as they approach or come into contact with the water, they conjure up a series of visions and rituals, plunging us into bewitching atmospheres, sometimes soft and sensual, sometimes playful, sometimes disturbing...