After watching the first two episodes of this week, there's no doubt that La Promesa has returned to La 1 with a strong presence. After the party in honor of the Counts of Campos and Luján, this series wanted to make an official announcement about Petra, the character played by Marga Martínez.
The housekeeper of the Marquises of Luján has become one of the main characters of the week. After getting her job back, Mrs. Arcos promised to take revenge on all those who almost ended her life.

Proof of this is what happened last Monday in La Promesa. That day, Emilia and Rómulo decided to get ahead of everything and expressed their desire to celebrate their wedding. The ceremony was hindered by Petra's (Marga Martínez) controversial decision.
With an unexpected veto, the housekeeper prevented the rest of the staff from participating in the religious ceremony. However, her colleagues were not intimidated and kept their composure.

As a result of this unpleasant moment, Samuel tried to clarify what really happened between Petra and María in the past. Since she returned to the palace, Mrs. Arcos hasn't stopped making the maid's life miserable.
However, in an act of rebellion, it's Petra (Marga Martínez) who reveals her best-kept secret to the former priest. It's a secret directly related to her romantic past.
This week, La Promesa reveals Petra's best-kept secret, Marga Martínez's character
Right before the last party at La Promesa, Samuel went to Petra (Marga Martínez) to ask her not to be so hard on María. At that moment, Mrs. Arcos confessed to him that she saw him kissing the maid and didn't hesitate to use this information against him.
Now, this secret has once again become the center of attention. During a conversation, the housekeeper has no qualms about revealing her stance on Father Samuel's decision to leave the priesthood for love.
Moreover, in a completely unexpected way, Petra (Marga Martínez) ends up confessing her best-kept secret to the priest: "Don't talk to me about love, Father!"
"You're going to abandon the path of faith for a mere maid. Can't you see? You're going to throw everything away," she reproaches, diverting the attention. It's a stance with which the former priest completely disagrees.
So much so that he doesn't think twice when assuring that, for María's love, he's willing to make sacrifices like this. At that moment, Mrs. Arcos gives him a clear warning: "Then you'll have to face the consequences."