His daughters are also pressuring Alaric to cough up information about The Merge that he may or may not be keeping from them.
So Alaric may or may not be stuck in a position where he might have to sacrifice one of his daughters to save the greater good, because if he saves both his daughters, it might unleash a darkness so terrible it might be more dangerous to more people.
And this may or may not happen just in the first two episodes.