Through the lens of her medium-format camera, Ann-Kathrin Müller takes the reader on a journey to a seismological station built in the 1960s somewhere in Eastern Germany. The black-and-white photographs of the station's interior and surroundings evoke a haunting atmosphere. Accompanied by short prose pieces by Judith Engel, a dialogue forms between images and text. The Signal questions a clear-cut rational and scientific approach to the world by blurring the lines between past, present, fact and fiction in a mysterious, opaque world.