"Cosy little place, I call it." Something in the man's expression as he advanced towards her brought all the iciness back to her tone and manner.
"It is a pleasant apartment," she said, "but I am not at all sure that I like being here, and I certainly dislike our errand.

It does not seem credible that, if the police have already searched, we should find the packet here." "The police don't know what to look for," he reminded her.

"We do." There was apparently very little delicacy about Mr.Fenn.He drew a chair to the desk and began to look through a pile of papers, making running comments as he did so.
"Hm! Our friend seems to have been quite a collector of old books.

I expect second-hand booksellers found him rather a mark.

Some fellow here thanking him for a loan.