I love the episodic nature of this manga, but I think I enjoy it most when we start to get several episodes that follow a theme. Such it is with this one, which looks back at Black Jack's past a bit and gives us a bit more insight into who he was, who he is and what makes him tick.
For me, the star of this issue is an encounter with his long-estranged father.
The man left when Black Jack and his mother were both badly injured from a bomb blast. The guy tries to be sympathetic, but in the end he's not, and Black Jack has a particularly unique revenge. But it's both touching and telling that later in this volume, we see said father's death - and his body, like his ex-wife's, helps make his son whole again.