Collapse IV features a series of investigations by philosophers, writers and artists into Concept Horror. Contributors address the existential, aesthetic, theological and political dimensions of horror, interrogate its peculiar affinity with philosophical thought, and uncover the horrors that may lie in wait for those who pursue rational thought beyond the bounds of the reasonable. This unique volume continues Collapse‘s pursuit of indisciplinary miscegenation, the wide-ranging contributions interacting to produce common themes and suggestive connections. In the process a rich and compelling case emerges for the intimate bond between horror and philosophical thought.