Nobody answered

The woman asked for the microphone very politely. Since nobody answered, she took it. Here the problem is the same: someone picked up the microphone and nobody said a word. Some clues in this case come as riddles. Four people and one microphone: one person per row, one per column. Whoever is left alone with it in the same room is the one you're looking for.

Suspects

• Aurora, the stagehand: She asks 'who are you?' to everyone who goes on stage. That day nobody answered and she thought that was fine.
• Baltasar, the singer: He holds the microphone out to the crowd at every concert. Nobody had ever taken it.
• Cecília, the radio presenter: She thought the woman was with the singer. She still thinks so, on principle.
• Dulce, the security guard: She lets nobody on stage without a wristband. The woman had one, from a party in 2009.