There's a lot of set-up happening in this episode and I'm going to get right down to it.
First of all, Harry and Murphy have an impromptu conversation about the future of their relationship and they wind up coming to the conclusion that they're not going to be compatible because her goals and his clash too often, and he's going to live for a lot longer than she does. Which makes a lot of sense, and I'm not mad at her.
Then Harry gets into the set-up and strategy of his spell with Bob, and then...he gets decked in the face.

Heh.
Enjoy the show!