I had stopped reading Martha Grimes a few years ago and thought to check out the evolution of the pub mysteries. The Old Success served as a reminder of the conceit of a "new" pub-- although the Old Success is but a bit player -- in this thinly plotted "mystery." The focus is still on the indolent, self-referent group at the Jack and Hammer with contrived mini-plot situations as the story unfolds: Aggrieved is a frustrated racehorse! Development: a famous trainer conveniently connected to one of the group arrives to work with him. Spoiler alert: he wins his race! One must really suspend belief to continue with this series. It doesn't work as a mystery but may exude charm of character for faithful readers. Others may discover the principals' "witty" repartee too twee and not their cup of tea or pulled pint. Loyal readers may, however, enjoy a bit of "Schadenfreude" when Plant turns the tables on Aunt Agatha.