S4E6 "Black Museum" - I don't know why I thought this episode was dedicated to an Afro-American museum. But it was really dedicated to the entire series and I see some props from other episodes.
It had three storylines in this show.
1st - Doctor could feel pain from his patients and really enjoyed it too much, where he has a boner.
2nd - Mother almost dies from a car accident, download her mind and into his husband to see, hear and feel things again around her kid. Then she became too much when the new woman is around. They take her out of his head and download her into a monkey.
OMG, this episode started off so f'ed up, which I liked. The 2nd was alright until it started to get way dark in the 3rd episode.
3rd - Hologram of a killer that was on display in the museum. Were you can electrocute him for fun, until coming to find out the woman was his daughter and the wife in the daughter's head. But the owner of the museum deserves what was coming to him.
I give this episode 10/5