M.C. Escher is among the most intriguing of artists. In 1956 he challenged the laws of perspective with his graphic Print Gallery and his uncompleted master-piece quickly became the most puzzling enigma of modern art. Fifty years later, can mathematician Hendrik Lenstra complete it? Should he?

• Locomotion Films
• Denys Arcand
• Joost Batenburg
• François Bergeron
• Hendrik Lenstra
• M. C. Escher