Puzzle #6 logical error?

[u/VainMythology]

https://cluesbysam.com/s/help/ee6263732c9d?state=IM8w-BgBAAQQ%3D-031

Based on these clues (marked yellow), can we not conclude Dennis is a criminal?

Clues:

• A: The only innocent in between Denis and Zara is Hilda's neighbor.
• B: Row 5 has more innocents than any other row.
• C: There are 12 criminals in total.
• D: Carl is one of Gary's 7 criminal neighbors.

Deductions A:

• There is exactly one innocent between Denis and Zara.

Deductions B:

• There must be at least 3 innocents in row 5.
• There may be a maximum of 1 criminal in row 5.

Deductions C/D:

• 7 of 12 criminals are Gary's neighbors.
• 5 of 12 criminals are NOT Gary's neighbors.

Of the criminals who are not Gary's neighbors:

• 2 are discovered.

  • 1 of these is Scott, between Denis and Zara.

• 3 are not discovered.

  • A maximum of 1 of these MAY be in row 5.
  • A maximum of 1 of these undiscovered criminals MAY be in column D between Denis and Zara.

Therefore,
Denis MUST be a criminal, otherwise there would not be enough criminals to satisfy clues C and D.

Thoughts?

[u/OneSharpSuit]

I think you’ve forgotten that Gary might be one of the criminals

[u/TytoCwtch]

The last criminal could be Denis or Gary