One of this summer’s hot new reads is Dean Bakopoulos’ new novel, “Summerlong.”  It’s the story of Claire and Don Lowry.  They’ve been married for a long time.  And they’re now back in the college town where they met — Grinnell, Iowa.  Claire wanted to be a writer but wound up a stay-at-home mom, while Don is a real estate agent.  When we meet them, they’re deeply in debt and unbeknownst to Claire, they’re also behind on their mortgage.  And then everything begins to fall apart.