Undertale Murder Mystery (Sittaford Mystery x Undertale)

It was only a minor spooky game to pass time on a snowy day. But when the psychic table-turning pronounced Asgore Dreemurr "dead", the people at the Dreemurr house became nervous. And when, a few hours later, Muffet discovered his dust, the game becomes an eerie and baffling murder case. Inspector Undyne is assigned the case and she vows to avenge the Fluffybuns' death. Sans forms unlikely forces with Raven, the Dreemurrs' family friend in order to clear Papyrus' name. The case soon became more than a mere puzzle to be solved- and as the pieces began to fall into place, the true culprit's identity loomed ever closer, like a shadow ready to be cast into the light.

Highly inspired by Agatha Christie's novel : The Sittaford Mystery (also known as Murder at Hazelmoor)