" In spite of some genuinely funny dialogue and a number of vivid characters, this collection of Keller stories seemed a little perfunctory to me. It is heavily freighted with long, detailed discussions of the nuances of stamp collecting, none of which had much to do with any of the plots. OK, Keller-the-killer keeps his guilt at bay and manages to stay sane partly by collecting stamps: I get it. But here it takes up so much time that it is a distraction, more or less like the repeated and repeated AA meetings in Block's Matthew Scudder novels. Maybe Block himself is more interested in stamp collecting than in writing. These stories show signs of being written by a master who no longer needs to do anything but gesture at actually writing the story. Block admits in one of them that they are really just puzzles--how will Keller get past the guards, or get into the impregnable building, or be two places at once, or correctly identify the real intended victim, or whatever? Once the puzzle is solved (and Block knows that we know he will solve it), there is no further interest. So here, the actual murders are foregone conclusions, and we don't actually witness any of them. Once Keller has figured out how to do it, the actual execution (in both senses) is assumed. In the last story, Block even foregoes clarifying the puzzle--he just states that Keller will successfully figure out who deserves to be killed, and the story ends. Maybe next time (if there is one) the phone will ring, it will be Dot with a job for Keller, and Block will let us assume the rest. "
— Jon, 2/7/2014