Lost Souls by Dean Koontz (2010) Bantam

The fourth volume of his Frankenstein series reveals that Victor Frankenstein's clone, released when he died, has found its way to a small town in Montana - just like Erica five and Jocko on a separate path.

Carson and Michael have moved to San Francisco, married and had a child, whom they named Scout, after the character in To Kill a Mockingbird.  Deucalion (the monster who is much more of a protector) visits them and recruits them to help find Victor.  This incarnation of Frankenstein has revised a new race plan and created something he calls Builders, which can replicate themselves by devouring humans.