Otto's breakdown at Anni's party. He's overwhelmed by his memories of the war, gets disparaging looks when he talks about the devastating state of soldiers on the front, and clings to his sister as he can't hold back his tears. When he has hauled himself home, Martin finds him crying in the hallway and brings him to bed, sympathizing with his pain as he's a veteran himself.
Martin: You can't sleep without light either, huh?
Paul Lohmann's fate, and Otto's futile attempt to save him.
Episode 2
Those poor little boys who accidently blew up a grenade shrapnel while playing. One of them is dead, the other is severely injured and has lost a friend. The kids aren't even ten.
Magda Goebbels may be a rude, arrogant bitch, but she's also devastated over her miscarriage and visibly suffers in her broken marriage that she has to keep up for propaganda reasons.
Episode 3
The hopelessness of Peter Sauerbruch's situation: He has realized that the Hitler regime must be stopped, but in his position, all he can do is return to the front and keep fighting for said regime.
Margot: He can't prevent the worst case.
Sauerbruch: What's the worst case? Defeat or victory?
Bonhoeffer pleading with de Crinis for his son-in-law's life, only for de Crinis to gloat.
A blind little girl on the pediatric ward needs a surgery, but when Artur wants to set her up for one, his boss Professor Bessau tells him she'll be sent to the pediatric hospital Wiesengrund instead, the same place where Artur makes his tuberculosis vaccine tests. Wiesengrund doesn't have a surgical ward; the child will be sent there to die because, according to Bessau, she's "substandard".
Otto confessing his love for Martin, who's pretty shocked. After making his own confession that he's already a registered 175er who has lost a lover to the concentration camp and will be sent there himself if he's found in another relationship with a man, Otto assures him, on the verge of tears, that he doesn't want to endanger him. Martin kisses him impulsively — only to tell him afterwards that they must never do anything like that again.
Episode 4
The wildly contrasting mother figures presented in the episode — one goes into a longer phase of shocked silence upon a trauma and can only snap out of it when her son is brought back to her, another is perfectly fine with giving her daughter, a girl with Down Syndrome, into the eugenics programme as a "burden" and an "unworthy life" and compares her unfavorably to her healthy, "Aryan" younger son.
Otto talks into Anni, trying to make her realize what is done to homosexuals, mentally ill, disabled or otherwise "undesirable" people, but Anni blocks. Otto is getting so desperate that he brings up Karin's condition, reproaching his sister bitterly for her attitude, although later, after Karin has gotten reported as a disabled baby and is at peril of being deported, Otto realizes how frightened and depressed Anni is.
After all the trouble to keep von Dohnanyi safe, de Crinis declares him fit for questioning and trial, having him arrested without even confirming his recovery. Dohnanyi takes it with dignity, but he has made plans because he feels it's Better to Die than Be Killed.
A real downer episode for Martin and Otto: Dejected after the loss and afraid to lose yet another person important to him, Otto tells Martin who wants to comfort him that they can't meet as lovers anymore and have to be just colleagues from now on. Martin meets him later in the attic and tries to act unconcerned, until he notices that Otto is having a breakdown — he's gotten his conscription order.
Episode 5
Otto's goodbye. Martin is afraid of losing him, and Otto once again puts up a brave face and acts like there's nothing to worry about. He's still about to give Martin his talisman necklace, although Martin insists that he keeps it — he'll only take it if Otto returns to him alive. Otto tells him the phrasing he'll use in his letters to tell Martin "I love you", since he's not even allowed to write him that, not with the mail getting controlled by censors.
The interrogation at the police department. Otto has no choice but to deny that he and Martin care about each other in any way, and desperately does so, but it doesn't help either of them.
Anni as Otto finds her in the attic. She's dosing Karin with sedatives so she'll be quiet and won't be discovered, and it's obvious that Anni is at the end of her wits. She can't trust her husband anymore, her baby being around is illegal by now, and if she doesn't want to incur suspicions, she cannot stay with Karin all day to take care of her. Otto hugs his sister as she cries in silent despair.
Anni's and Otto's mother calling and fearfully asking about her son — the police has been searching her place after Otto deserted, and his mother knows that he'll be hanged if they find him.
Episode 6
Maria Fritsch and Fritz Kolbe say their farewells because he's out to contact the American military command. There's no telling if he can even leave Berlin alive; they don't know if they'll ever see again, but both of them acknowledge that the other has a job to do.
Artur's and Anni's wrecked marriage. At the beginning of the series, they were cuddling and joking in bed, affectionate and making plans for the future — now Anni pulls back when Artur tries to give her so much as a kiss on the cheek, they snap at each other at work and silence at each other at home; Anni sleeps in a separate bed now and constantly lets Artur feel her reproaches and contempt for what he has done.
Martin and Otto tentatively make plans for their future, but have to admit that, realistically, the end of the war might not mean much of a betterment of their personal situation — Soviet laws are just as homophobic as Nazi laws, and France might have a more liberal law but won't welcome German veterans.
The Jewish father who brings his son to the hospital and still, even when the end of the war is hours away, has to fear for their lives if they get recognized as Jews. He has lost a wife and a newborn daughter to the concentration camp, two weeks ago. Even in doom, the Nazi regime doesn't fail to deliver terror.
Otto getting shot. Martin is on the verge of despair when he finds him, but can bring him to Professor Sauerbruch in the OR — where the Soviet soldiers get in his way because they want that their men get treated first. Sauerbruch shouts at them that their soldier, different than Otto, actually can wait a few minutes, and Martin tries and fails to find a matching blood donor. After the surgery, he stands waiting by Otto's bedside, silently crying and waiting for him to wake up.
