These are some of the things I just don't understand:
Leon, the taxi driver, was working for Theis and I assume he would know the family, given that they live above the workplace. But when he was asked by the police (as a taxi driver) about the lift, he didn't say he knew Nanna, just that he recognised her from giving her a lift. That, to me, is very suspicious.
Last night when we saw him (right at the end) pull on a red jacket and look at the photo, then I thought the photo was a sort of shrine to Nanna, put up by Vagn. I did think it was a red herring, and spent the night thinking that Vagn must be involved. But why wouldn't Leon tell the police "Oh yes, that's Theis' daughter, she asked me to drop her off at the flats."
Also, given that Theis is Leon's boss and that Leon "owes" Theis and Vagn something, wouldn't Leon wait for her or even go up there with her, if it was dark?
Why would Nanna leave her passport in the drawer? I know she is the one who said that, but given the flat was just somewhere to go to have sex, why would she leave anything in a drawer? I could imagine she'd leave jewellery there by mistake, but a passport?
Bengt said, "Oh that type of necklace is seen everywhere." But fifteen years had passed between the first girl disappearing and Nanna holding it. Surely to god Bengt isn't that bad a psychologist to deny the significance of that?
Oh yes, I'd wondered about what Troels had said about the lift. He was caught out, there, wasn't he?
The problem with Morten as a suspect is that he just doesn't look like he has anything else on his mind except Troels and the political intrigue. He just looks baffled and hurt and confused, but not as though he's tormented in any way.
I still favour Troels as being involved. The timeline of the flat is so unlikely - he leaves, girl arrives, killer arrives, all within minutes.
Oooh, wonder whether Leon gave Troels a lift? He was waiting outside when Troels was supposed to have been coming out.
Also - last one, honest! - the greasy leader of the Opposition (forgotten his name, the one who died) admitted going online as Faust and emailing the girl. However, he wouldn't have been able to use the "Faust" name again, would he, once he'd left the flat? Yet their affair went on for several months and there were a lot of emails between the two, not all on the same night.
That's it, I think!