The passage is from a book review entitled "Top 6 Books About Gangsters" by Rod Reynolds.
Sprawling and complex, yet exquisitely plotted, it’s the pathos Ellroy imbues in his tough guys that sets this apart. That and the fact that it features the villainous Dudley Smith at his absolute zenith.
What is the meaning of "That and the fact that"? What does the first "that" refer to? Is the second sentence a fragment?