Here is a concise summary of the provided text:
**Title:** Investigating a "Possessed" Doll that Only Walks with Its Owner
**Summary:**
* A YouTuber (Luis) joins paranormal investigator Cesar Buenrostro to investigate a doll (Luisa) that allegedly only walks with its owner, Alejandra.
* Alejandra claims she cast a spell on the doll, which began exhibiting strange behavior at age 3.
* During the investigation:
1. Luis tries to walk with the doll, but it doesn't move.
2. Alejandra talks to the doll, and it appears to walk with her while being filmed.
3. Luis attempts to walk with the doll again, with inconclusive results.
* Luis remains skeptical, questioning whether the phenomenon is paranormal or has a more rational explanation.
* The video concludes by inviting viewers to share their theories on the doll's behavior.
Here are the key facts extracted from the text, numbered and in short sentences:
1. **Investigation setup**: A YouTube video creator joined Cesar Buenrostro, a paranormal investigator, to document an investigation.
2. **Case in question**: The investigation revolves around a doll named Luisa, claimed to only walk with its owner, Alejandra.
3. **Location**: The investigation took place in Iztapalapa, Mexico City, at Alejandra's home.
4. **Cesar's background**: Cesar Buenrostro is a 25-year veteran paranormal investigator, also known for his work on UFOs.
5. **Cesar's approach**: He describes himself as a "skeptical" and "objective" investigator, aiming to solve problems without practicing superstition.
6. **Alejandra's claim**: She asserts that Luisa can walk with her due to a spell she practiced on the doll after reading a book on witchcraft.
7. **Discovery of the phenomenon**: Alejandra first noticed Luisa's alleged movement when her daughter was around 2-3 years old.
8. **Alejandra's interaction with Luisa**: She talks to Luisa about personal matters and projects.
9. **Experimentation**:
* The creator attempted to walk with Luisa but was unsuccessful.
* Alejandra then successfully demonstrated Luisa walking with her on camera.
10. **Creator's conclusion**: While acknowledging the doll's movement, the creator is skeptical about the paranormal nature of the event.
11. **Call to action**: Viewers are invited to share their theories on the phenomenon.
12. **Collaboration acknowledgement**: The creator thanks Cesar Buenrostro for the collaboration and invites viewers to visit his YouTube channel.