What an episode!
First, the reference to ANH when Obi-Wan tricked a Mandalorian for assistance, then knocked him out and stole his armor.
Then, the death of Duchess Satine at the hands of Darth Maul. As if killing Qui-Gon wasn't enough pain for Obi-Wan.
Next, the duel between Sidious and the Nightbrothers.
Finally, the revelation that Bo-Katan was Satine's sister!