Episode 4 is the fourth episode of Part 1 of Netflix's Money Heist. It aired on December 20, 2017.
Raquel suffers a personal crisis with her ex. The hostages attempt to contact polices, but they are frightened by the gunshots they overheard. The thieves argue among themselves.
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Denver is ordered to kill Mónica Gaztambide for concealing a cell phone. However, he can't bring himself to do it. Denver instead shoots Mónica in the thigh to make it appear that he killed her, and he hides her in a secluded vault.
The police calls the Professor to convince him to surrender, however the Professor refuses to. A few moments later, Raquel receives a call from her mother, who has Alzheimer's. Alberto Vicuña, her ex-husband, has taken their daughter Paula out, despite the restraining order against him. Alberto returns some time later with Paula.
To breathe a bit, Raquel talks to Salva at the Bar Hanoi. She tells him that her ex-husband beat her for several years, and that she did not dare to file a complaint because he was also a police officer and was admired by everyone the police station.
Following Mónica's fake execution, the robbers, who heard the gunshots, attack Berlin. He explains that he had no choice and the others are completely lost, since the rule of "no blood" has been broken. When Moscow learns that his son has executed a hostage, he experiences a panic attack. He decides to open the doors of the Factory to breathe some air, risking being shot by the police. Denver manages to bring him in at the last moment by explaining to him that he did not actually kill the hostage, but that he was pretending.
Mónica remains hidden in the vault, with the bullet still in her thigh. However, Denver does not dare to operate, and gives her a makeshift bandage instead.
The robbers decide to take Moscow and some other hostages to the roof to allow Moscow to catch some fresh air and calm down. Everyone is wearing a red jumpsuit and a Dali mask, so that the police cannot identify whether they are hostages or robbers. However, when Arturo Román hears that it is Mónica, his lover, who has been "killed", he gets angry and begins to attack one of the robbers. The police mistake Arturo for a robber, and Raquel orders to them open fire. Arturo is shot in the shoulder.
At the end, we learn why Moscow took his son to join the heist with him. In preceding months, Denver owed money to a dealer, so his father was forced to find money to help him.
- Uncredited in opening credits for unknown reasons.