Important parts

Exploration Stage: Angela's Park
From: Inspector
Description: Angela Crawley's work has been spectacular in several ways. If you follow her investigations, you will probably find traces of her kidnappers. Or a secret Mafia hideout. Where should we start? As for the Borrani case, I have some tapes of testimony. But my tape recorder is broken, so I can't listen to them. In order to listen to Borrani's testimony, I need to collect parts of the recorder and repair it. First, let's find a cassette deck.
Completed: It looks like this cassette deck works. This is what I needed to fix the tape recorder. How do you find things in this mess? Your talent is real! I'll have to find the rest of the tape recorder. That way we can hear Joe Volani's testimony and find the mafia's secret hideout.