Solution: The Cabin in the Woods

11×11 Murdoku case · Medium · murdokuonline.org

Elsa did it — the only suspect in the room with the victim, outlined in red below.

C1C2C3C4C5C6C7C8C9C10C11
R13TeBella6StCa4TeMTe
R2CTeMCCaStCaVasiliyTeC
R3CTeCaFloydOCMTe
R4TeMCaCaTeElsaC
R57To29TaCs5GIris
R6JonasToWCCmC
R78AnnaSSC
R8Sh1MCyrusTTT
R9THughTM10CrC+CrLTB
R10MTTCrTaSDalia
R11TBGretaT

Where everybody stood