Damon is repeatedly sent back to a traumatic day during the Civil War in 1863, where he was tasked with capturing a group of deserters.

"The Vampire Diaries" Hell Is Other People (TV Episode 2016)

Damon only escapes after finally submitting to his pain and expressing genuine remorse to a vision of his dying mother.

The title is a direct reference to Jean-Paul Sartre’s 1944 play, .

Each time the loop resets, the situation grows darker. Damon initially believes he can "solve" the loop by being a hero, but the Stone reveals that his true torment is his repressed guilt regarding his mother, Lily.

Upon waking, Damon is so traumatized that he believes he is still in a loop. He lashes out and seemingly kills Bonnie, Caroline, Matt, and Stefan, leaving the episode on a massive cliffhanger. Philosophical Roots