I stopped reading Pterry in the 90's but recently decided to catch up on all the books I have missed whilst he is still with us. I am not doing them in chronological order though, I am following this suggested reading order .. www.co.uk.lspace.org/books/reading-order-guides/the-discworld-reading-order-guide-20.jpg.
Working through the Guards books first as I really enjoy those characters.
I am giving this one 4 stars, some laugh out loud moments and a decent plot variation on the locked room mystery. Some interesting musings on society as well. Definitely PTerry on form.