From the first day of confinement following the outbreak of the Covid-19 epidemic, Antoine d’Agata roamed the streets of Paris with a thermal camera recording the viral epidemic that turned the city into a strange theatre of wandering souls, bowed heads and fleeing bodies. Initially attracted by the way in which the thermodynamic device displays the infrared rays emitted by bodies, d’Agata was soon fascinated by the way that the process reduces human subjects to essential figures, devoid of superfluous characteristics or specificities.