Aforementioned doctors kindly inform Cal that Adam has had a stroke, he is almost completely paralyzed, and they don't know how long he will live. He might not even recognize Cal.
Cal goes into Adam's room to have a look-see at his dear old dad; Adam seems calm but unaware of anything.
Cal spills his guts to his father about the whole taking-your-innocent-brother-to-your-mom's-whorehouse thing, and then he hides his face so that he doesn't have to see the judgmental look in Adam's eyes.
The boisterous nurse comes in and shoos everybody out so that she can do her job.
In the kitchen, Cal tells Lee that he can't stand the look Adam gave him; in his mind, Adam called him a murderer with his eyes.
Fortunately Lee has read up on the subject of strokes and he reassures Cal that Adam probably doesn't even have control over his eyes.
Also Cal should get over himself.
He tells Cal to go see Abra.
Cal rings Abra's doorbell and when her mother answers he not-so-subtly demands to see her.
Abra's mom is not down with this idea, but fortunately Abra doesn't care what her mother thinks and sneaks out the back door to meet Cal.
Cal fills her in on the nasty details of Aron's death and Adam's stroke.
He also tells Abra that he's worried that he's got his mother's blood in him.
Well, says Abra, even if Cal's mother was a whore, Abra's father is a thief, so it all evens out.
Cal wants to go hang out at the willow tree that Abra and Aron used to play in, but Abra's not going to let him run away so easily; they are going back to the house.
Lee knew all along that Abra would get Cal to come back. Clever Lee.
Lee wonders about humanity inheriting the imperfections of the generation before and being re-worked. It's really abstract and Cal doesn't quite get what he's talking about.
It's time to go in and see Adam.
Lee kicks the nurse out and talks to him about whether or not he is even alert, or can understand things—Adam seems to be able to.
Lee tells Adam that Cal is the only part of himself that will be left after he dies, and that as a result of Adam's rejection of Cal, Aron is dead.
Then he tells Adam to free Cal from his guilt, and to give him his fatherly blessing.
Adam struggles, but he is able to lift his right hand an inch. Success—it totally counts..
Then Adam says the word "Timshel!" before closing his eyes, presumably forever.