Solution: The Final Checkout

8×8 Murdoku case · Medium · murdokuonline.org

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

C1C2C3C4C5C6C7C8
R13L2SElsaS
R2CBAnna
R3CB6F1CaFloyd
R4LFCarolFCC
R54LDaliaCaCh
R6BC7ChChLo5BellaW
R7VickyBCTT
R8LGretaChPW

Where everybody stood