Wanda’s clue was the one that nearly tripped me up:

Each column has at least one criminal

At the time I read that, olumn B had 3 known innocents, so I tagged the 2 unknowns as a group, which in my system means 1 criminal, 1 innocent.

When I reached Gary’s clue

There’s an equal number of innocents in columns A and C

I thought there was a mistake, until I realised both the unknowns in column B could be criminals.