((I think I accidentally pressed 'tab' wile typing and posted it.))
((Exactly, that brings in another issue, Lyle stated that they were missing rather than dead... however, if the witnesses are cross-checked it is almost impossible that they would have the same explanation and seeing as Evangeline and I think THE as well are capable of bracelet signal interception, any attempts to coordinate a lie would be even more catastrophic. Hence the issue becomes of what happened and who was responsible.
A lack of a cohesive explanation would indicate the need to hide something, presumably death, however, that still leaves the killer unknown, if Death actually does assist and for some reason can't determine the circumstances of death, that leaves it into an investigation of Jason and Darnos. The motive of the former being revenge, the motive of the latter being Darnos.
However, if a full mission report is also obtained, then Darnos would be acquitted as it would become apparent that the magic of the investigators were disabled thus leaving only one person with the capacity to kill in that manner. That would, of course, be Jason. And alternate process may occur by having Darnos explain his backups by having it examined to show that it was indeed triggered by murder. Of course, THE would know that the simulacrum was incapable of murder and that it was overridden by a backup triggered by murder thus indicating that Darnos was an effect, not a cause.
Should the inquiries and investigation take this path, then it would be a matter of arranging for the punishments. Jason committed homicide. Granted, he had sympathetic justifications, but at the end of the day, he murdered three other students in cold blood.
Whilst it may be argued that it was the only way out and staff could not be contacted, that is not strictly true. No one tried using any enchantments, so no one would have known that. Furthermore, the enchantments would have worked once and only once. However, about half the party had a bracelet, that is more than enough to send a distress call to one of the members of staff who have one such as Nikki or Ricardo, or at least some other student who could inform a teacher. Furthermore, they had no evidence that it indeed was the only way out.
Next comes the issue of the other people involved, while they could have not prevented the murders, they did lie about them. The mitigating factor here is that they were under duress, however, the issue remains that they still could have informed staff via bracelet, after all, Jason would have no way of knowing if a message was sent, assuming that he even knew what the bracelets do.))