"5 Days a Stranger", "7 Days a Skeptic", "Trilby's Notes", and "6Days a Sacrifice" are the four parts of a horror series that were released in 2003, 2004, 2006, and 2007 respectively. In "5Days a Stranger", the player controls the shady cat burglar Trilby, who stumbles across a demonic force that manifests itself as a masked killer in the tradition of Jason Voorhees or Michael Myers, while finding himself one of a group of strangers thrown together in an abandoned mansion and being picked off one by one. "7Days a Skeptic" emulates the claustrophobic horror of "Alien" following a spaceship crew that finds a mysterious artefact floating in space, four hundred years after the events of "5Days a Stranger". "Trilby's Notes", set in a hotel which exists in both the real world and a horrific alternate dimension in the style of "Silent Hill", goes back to flesh out the origin of the cursed African idol from the other games. "6Days a Sacrifice" is the final episode of the John DeFoe tetralogy. It links all its three previous episodes and completes the story of Chzo and John DeFoe.