It's every performer's nightmare; coming onstage before learning your lines, with no idea what might happen, alongside fellow cast members you've never met before. But this ultimate test of acting ability is a nightmare you won't want to miss. This is the formula of Nachtgasten (Nightguests), theatre improv's big hit from the Netherlands. Actors throw themselves into the unknown with only one certainty; the role they play. Every evening will be unique, with a different story, different actors, and a different outcome. Niels Croiset, Koen Wouterse and Yroick Zwart have delighted Nachtgasten audiences for over five years, and have performed in Belgium, Germany and the Netherlands. Now, for the first time at the Space, they bring their unique brand of improvisation to London.