The Underground Railroad

I've really enjoyed some of this author's other books, but this one was a little disappointing for me. It was a great concept, but the characters felt underdeveloped and emotionless, and the plot felt a little repetitive after a while. Whitehead wrote another great historical book (the references to the Tuskeegee syphilis study were a surprise for me and I appreciated that detail) but it just lacked emotion for me.