The tow truck

The seized trailer should have been in the police warehouse. To get out of there it needed a tow truck, a delivery note and someone who didn't ask questions. Four people and one piece of evidence: 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

• Agostinho, the warehouse guard: He guards the seized goods. A trailer, he says, isn't something you lose.
• Bernarda, the tow truck driver: She drives the official tow truck. That day she towed something that wasn't on the note.
• Corsino, the builder: He has a warehouse full of materials. Now he also has a trailer he says is an old one.
• Dina, the clerk: She writes the exit notes by hand. Her handwriting is famous because nobody can read it.