The final confrontation between Klaus and Mikael underscores that while Klaus has changed for his daughter, his relationship with his father was beyond redemption.
In a shock ending, Klaus kills Mikael with the White Oak Stake. Since the "Other Side" no longer exists at this point in the series, this was intended as his final exit.
Elijah and Marcel work with Josephine LaRue to create a magically protected safe house in Algiers to hide Hope from Dahlia.