Throughout the game, Sissel saves several people, including a girl named Kamila who was tied up, a dog named Missile who was shot, and Lynne, who dies several times. He learns that she is investigating something significant, and teams up with her, with Sissel trusting her due to her honesty. He winds up saving the girl and killing the man, learning that the girl's name is Lynne. Additionally, Ray warns Sissel that his soul will disappear by dawn.

Ray teaches him how to use his 'ghost tricks,' which include the ability to manipulate objects as well as the ability to rewind time to four minutes before a person's death to reverse it. While the woman is moments from being shot, he is met by a fellow ghost who inhabits a lamp, nicknaming himself as 'Ray of light,' who convinces Sissel to help her, saying that it will help him recover his memories. Initially, he sees a woman being held at gunpoint by an assassin, with the corpse of a man in red in between them, which Sissel deduces to be his own. Sissel's first appearance was in the video game Ghost Trick: Phantom Detective, where he is an amnesiac ghost who is attempting to recover his memories. He was praised by critics for being a well-written and relatable character.

Beginning the game as a ghost with amnesia, he must figure out what caused his death before the dawn breaks and his soul dissolves forever, solely by using his poltergeist-like ability to move objects.

Sissel is a fictional character and the main protagonist of the Nintendo DS video game Ghost Trick: Phantom Detective. Sissel, as he initially appears in Ghost Trick: Phantom Detective.

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