Alicia spends a lot of time explaining mathematics to her analyst, and the explanations are quite detailed. I must admit that I am quickly lost, and I wonder how McCarthy became so conversant in the field. There was no inkling of that in his earlier work.
I'm just wondering whether the math discourses hold up under scrutiny - I can't tell - and I recall that we have a resident math aficionado on this list.
The novels also feature a very memorable character known as the "Thalidomide Kid", who inhabits and directs Alicia's hallucinatory adventures.