I think that this is the 16th Miss Silver mystery that I've read, and they've become one of those series that is a constant source of comfort reads for me, especially since I've finished all of the Christie mysteries.
This was a pretty good one, too. I liked the atmosphere of The Catherine Wheel, which definitely had similarities to Du Maurier's Jamaica Inn, although Wentworth never matches Du Maurier for darkness. The side characters were good, and I really liked by Eily and Jane Heron. Of the two male love interests - because Miss Silver always has romance in her heart - I liked John Higgins, but found Jeremy Taverner to be a bit too he-man, masterful for my personal tastes.
I would note that this book marks the dead middle of the Miss Silver books for me. None of the stand-alones have matched Miss Silver for enjoyment, although Grey Mask remains the low point of all of Wentworth's books.
Next up is Miss Silver Comes to Stay.