52:28 The Cat Who Played Post Office by Lilian Jackson Braun

Another in the series. I really enjoyed this one as it really picks up the story where the last book left off with Qwill's inheritance of the K estate. He manages to sniff out a suspicious disappearance and the book follows as he tries to figure out what happened. Some of the stuff was obvious and it was a little annoying that he took an extra 50-100 pages to figure out what was pretty obvious to those reading it but the ending was a nice added little twist. Something I had considered to be sure but had been discounted...until it was brought back up after a few more loose ends were wrapped up.