The Bispebjerg Trick - S6.E7

Frank and Mia are looking at houses. The previous owner's wife is dead, but the body has never been found. Frank finds a bone in the garden, and his stubborn eagerness for the bone to be checked leads to shards in the joy of him and Mia. This is how it goes when Niels Hausgaard inaugurates Frank and Casper in the secret behind the "Bispebjerg trick", which is the closest you can get to having sex with someone other than your partner, without being unfaithful.