Like everyone else, I became a Patterson fan when I read Eyes of a Child and Degree of Guilt. I bought everything he wrote until he started off on his political tangents. I couldn't even finish the one about the death penalty and I know to avoid any of his later books starring Kerry Kilcannon.
That said, I was so thrilled to see him putting out a book that didn't harp on political issues, that I bought The Spire. I really enjoyed it and finished it in less than a day. It was maybe a little slow, and the character development a little thin, but compared to his last efforts, this is a masterpiece.
If you love Patterson, you'll like this book. But do not expect it to be in the same league as Eyes of a Child and Degree of Guilt.