Net niet

This book gets off to an excellent start as a thrilling, fast-paced crime drama and I like the main characters. But by the second half the story starts to get implausible and even unbelievable... There is no federal support for the Howard County police in their hunt for a serial killer; a mathematics professor goes out on his own to find the suspect...
Finally, the real dealbreaker is that the background and motivation of the killer are not very well developed.
Close, but no cigar.