Autumn: a limbo between the relentless heat of summer and the central heating of winter days. It brings along colours and atmospheres that do not describe stagnation but a perpetual becoming, a gradual and romantic decadence that can be accepted in the promise of a future, spring-like rebirth. It is in this suspended dimension that the obscure, the dark, the surreal, obsessions and petulant memories make their way. October is the month that most embodies this spirit. We have selected five exhibitions that we believe could do the same. Gloomy settings, dark colours, monsters and more or less familiar magical creatures will animate the museums, taking visitors into an otherworldly atmosphere.