Enigma by Catherine Coulter

Two mysteries intertwined with no connection.   The title is based on a mysterious stranger who claims he is an enigma who attempts to kidnap a pregnant woman.   The other mystery is the escape of a manipulatively charming rogue who murders his way to freedom.

This is a Savich and Sherlock mystery.   The two are a married duo of FBI agents who are supported by a rudimentary AI laptop named Max.  They are somewhat ambivalent about the rule of law and tend to utilize whatever method will solve the crime or save the victim.

This had plenty of action, some violence, Russians, genetic manipulations, psychological aberrations and heroism.  

I enjoyed it and recommend it. 

This book may have been received free of charge from a publisher or a publicist. That will NEVER have a bearing on my recommendations.