[Her eyebrows raise, but she doesn't yet comment on the improbability of his being a detective at that age. Either he's lying, in which case this conversation will be very dull very quickly, or he's not, which would make him an intriguing figure indeed. Either way, time will tell, and so instead:]
Majoring in criminology, I assume? I'm surprised you're only just starting to attend now.
no subject
Majoring in criminology, I assume? I'm surprised you're only just starting to attend now.