Alex did it — the only suspect in the room with the victim, outlined in red below.
| C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | C9 | |
|---|---|---|---|---|---|---|---|---|---|
| R1 | 6P | 2Ca | Ca | Ca | Ca | 3Floyd | C | T | |
| R2 | Greta | S | L | Ca | S | C | T | ||
| R3 | C | C | T | C+Ca | C+Ca | T | C | Cyrus | T |
| R4 | C | C | T | Edison | C+Ca | T | C | 1S | C |
| R5 | P | Hana | Ca | Ca | |||||
| R6 | Dylan | Ca | Ca | Ca | Ca | Ca | S | ||
| R7 | 4 | F | F | 5P | C | C | Viktor | ||
| R8 | C | Bernd | T | L | T | ||||
| R9 | T | C | C | T | Alex | C | P |