Solution: The TV Junkies

8×8 Murdoku case · Easy · murdokuonline.org

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

C1C2C3C4C5C6C7C8
R11TTS6TSVita
R2TvCTTGrant
R3Floyd4S
R4TCCarolS5TvTvT
R5TvDylan
R6TTAnnaTv2S
R73CTTvElsaST
R8BellaTTTS

Where everybody stood