With Francine Stock. Luc Besson discusses the neuro-science behind his latest thriller, Lucy, in which Scarlett Johansson's brain capacity increases to dangerous levels. The Dardenne Brothers discuss their latest award winning drama Two Days, One Night, with Marion Cotillard. Palaeontologist Jack Horner explains how he tried to make Jurassic Park as scientifically accurate as possible. Catherine Bray reviews a box-set of the films of Kelly Reichardt, whose movies defy conventions such as conclusive endings and coherent dialogue.