Why did you help the police ?" "It isn't very obvious.

Somehow, I didn't like the fellow.

Then, you see, the girl--" "The girl?
What had a girl to do with it ?" Lister frowned.

He had not meant to talk about the girl and was angry because he had done so, but did not see how he could withdraw his careless statement.

Moreover Vernon looked interested, and it was important that both were typical Canadians.