Susi Wirth was born in Chur in 1970. She grew up in Liechtenstein and Switzerland, and now lives and works in Germany. After completing her training as an actor she performed on a variety of stages and has worked together with many independent theatre groups. In 2000 she and the composer and musician Olivier Gabus founded the Companie Sous-sol. Susie Wirth has written numerous plays. The Companie Sous-sol has received many awards.