I get where you're coming from but there is a slight difference between confirmation bias and the Halo Effect.
Basically, the former plays upon beliefs or suspicions one already has, while the other is a bias formed from partial information.

Confirmation Bias: the women in Copenhagen were gorgeous and it's really nice there too - I wish I could live there!
The bias here is that the thinker assumes it'll be a great place to live - despite not knowing the language - just because it's a small, clean, modern yet somewhat historical city with a lot of eye-candy.

Halo Effect: the women in Copenhagen were gorgeous and it's really nice there to - eince Sweden's also jn Scandinavia, I bet it's nice there too and has just as much eye-candy.
The bias here is that, because both cities are in Scandinavia and one was great, the other must be.

The differences can be subtle, but I hope this clears it up.

Ah, that would make sense, thanks.
To their defence though: they don't know about the rape and MC has been their prime suspect (for stupid reason) for a long time (even though they caught the school kid red-handed).