No progress and why the police is being slow

First of all, I'm afraid to disappoint everyone, there's no progress on the investigation itself.

The officer in Stockholm had a discussion with LYP and others after his arrival in the city. About the case itself, she doesn't think other assumptions (e.g., crime on the boat) are plausible (due to no evidence). She'll acquire camera record from the boat.

There's a senior detective in Turku, Finland who's in charge of the case. They have search the harbor and nearby hospitals. No findings. The detective also had a discussion with the group when they were staying in Turku. He agreed that suiside may not be the case, and he understood the concerns. He informed the group that the Finnish police are going to look for a body from now on. Nevertheless, he warned that according to his personal opinion (experience), there's a chance that nothing will ever be found. He indicated that the worst case should be well considered.

According to GLei, the Finnish detective seemed to have done more work and was more understanding to the situation. Also, he mentioned that this is not a rare case. There're several such kind of missing on boat cases happening each year, most of which end up leaving no clue to the police.

The reasons why the progress is so slow are:
1. In fact the Vikingline boats belong to Finland. This leads to the difficulties for the Swedish police to acquire camera records.
2. The police in Stockholm are local to the city. They don't have the power to investigate on the boat and the sea.
3. In gerenal, this case leaves very limited lead and no evidence of anything (collected so far).

Other issues:
1. Private detectives are not specialized in this kind of cases (more for financial and family problems i.e., debts, affairs etc.).
2. Lawyers can be a resource for legal advices and help. However, lacking of clues makes the case not likely to be accepted.