We worked out at last the link with the social worker - but became hopelessly confused as we thought the strange woman in the leather jacket with nothing underneath was the same one the social worker took to the secret location! After a while, all those blondes tend to look very similar, but by the end (yes, our brains do get tired after an hour of those sub-titles) we sorted ourselves out. Still don't know where the heart patient comes in, though realise this was indeed the ambulance crossing the bridge in episode 1.
Have loved all these Scandinavian programmes, "Wallender", "Borgen", etc., and also enjoyed the French police series "Spiral". Have visited Sweden as we have friends there, it's good to see it on film.
Montalbano - mmmmmmm!