To coincide with this week's Oktoberfest, we have a pair of Q&As from the Spring SCI-FI-LONDON festival, in which Alex Fitch talks to the directors of a couple of the more cerebral SF films that screened at the Stratford Picturehouse. Kristina Buozyte discusses her erotic techno thriller Vanishing Waves in which a scientist travels into the mind of a coma patient to try and revive her consciousness. Also Shazad Darwood talks about his feature film Piercing Brightness where cultures and alien encounters collide in an elliptical film shot on the streets of Preston, Lancashire. (More info at http://piercingbrightness.tumblr.com / http://vanishingwavesfilm.com)