Hmm... Well, for one, I'd bring Saihara-kun since he can use his skills as a detective to find a way out. The second one would be Amami-kun since he's smarter than he lets on and never loses his cool. He'd be able to find things Saihara-kun might've overlooked. As for the third one... perhaps Harukawa-san as she is also very logical in her thinking.