brain teaser

So moments ago, I was walking in a shopping centre with Rachel in my #dream. She quizzed me with a brain teaser. "There were 2 policemen with 3 suspects in 2 interrogation rooms. One of the suspect was unattended. How was this possible?" I immediately replied that I know the answer and she was eager to find out too. And then she woke me up telling me that our Mcd breakfast has arrived.