This has to be the most cut and dry murder that will not result in a conviction since OJ.
Why do you anticipate no conviction?
While I don't know what the burden of proof is is in Denmark, if it is similar to that in America where guilt needs to be proven beyond "reasonable doubt" I don't see a conviction coming. There are no witnesses, yes she was on the sub and yes her DNA was on the suspect. But his lawyers can claim that he had a co-pilot on the sub who lost it and killed her then abandoned ship. The reason her blood was all over him was to try to save her, then he panicked when she died so he sank the ship. Defense attorneys love to play these games (since its their job to get their client the lowest sentence possible, regardless of their guilt) and I can see a jury or lay judges being able to come to a majority verdict of guilt.