This book isn't a sequel to Innumeracy and certainly is not 'more of the same'. It is instead essentially a succession of short essays on different mathematical topics such as probability, calculus, algebra and so forth. Yet because of the authors very accessible writing style it is by no means a textbook but instead a thoroughly enjoyable journey through important mathematical ideas.
It's strength is that each topic is covered quickly with enough depth to be spark interest and enough brevity so that the reader can use each topic as a launchpad for further research if interested. The author includes his own thoughts frequently and this is welcome, making the book feel like a stimulating personal meeting with the author.