the one who killed Diane is the same person that killed her father four years ago, proclaiming his own innocence in both slayings. He asserts that Hilda, Justin Lawson, and Commissioner Barton are all to be considered suspects, as they were the only people involved in the Forbodium Castle incident four years ago. Upon investigation of the two incidents by the trio and a newly arrived Justin, the impossibility of a culprit other than Alfendi appears irrefutable, and, despite every new fact brought to light, Lucy is gutted when the "Placid Prof" asserts his own guilt. Despairing, Lucy is told by Hilda that "Potty Prof" is actually the Alfendi she and Lawson worked alongside, and that his gentle, "normal" personality is the so-called "fake one" that formed four years ago. In spite of this shock, Lucy resolves to keep believing in Alfendi, and conducts a final investigation, through which she unveils Justin as the mastermind behind the murders of Keelan and Diana Makepeace. He had found out about Keelan being the Jigsaw Puzzle Killer four years ago, and made him a deal, allowing him his liberty so long as he eliminated certain people at Lawson's request. He also took advantage of the Jigsaw Puzzle Killings to disguise other unrelated murders, placing jigsaw pieces at their crime scenes. Lawson killed Keelan to silence him, and killed Diane out of a fear that questions about the incident were resurfacing, especially surrounding the increasingly frequent fronting of "Potty Prof". However, even after confessing, he refuses to elaborate on his original motives, simply stating that some bad people had become too powerful. Some time later, Alfendi visits an incarcerated Justin, who claims that the origins of Alfendi's "placid personality" are in brainwashing efforts made on Al by Lawson while he was in a coma following the Forbodium incident, in the hope of ensuring Al kept his mouth shut. Both of Alfendi's personalities and Lucy are all unconvinced that such a cheap trick could work, and vow that between the "three of them" they'll solve the "mystery of Placid Prof". In a final scene, the Commissioner is seen talking on the phone about recent events with an old friend named Hershel. Gameplay The game is split between two distinct and alternating portions: investigation sections, and interrogations. Most of the cases follow the same routine, in which the player is given the basic facts of the