Guillaume Canet’s “Karma” opens with a couple, Jeanne (Marion Cotillard) and Daniel (Leonardo Sbaraglia), slow dancing to “Until I Found You” in their house tucked away in a Northern Spain village. “I said I would never fall, unless it’s you I fall into / I was lost within the darkness, but then I found her,” singer Stephen Sanchez’s voice croons over them while they’re lit by nothing more than candlelight.