This is a collection of short mysteries in which Tommy and Tuppence work their way through posing as detectives owning their own agency, as asked by Scotland Yard, to catch a mean suspect. Tommy and Tuppence are wonderful characters. They have great humor and love to pick on each other. I really enjoyed the teasing of each other. And this lovely couple act out different detectives for each case, based on what they know of the case. You really get a small glimps of how they see other detectives in the books.