Dr. John Duffy is an experienced clinical psychologist, bestselling author, and a parenting and relationship expert. For nearly twenty years, he has worked with individuals, couples, teens, and families. He has appeared on Steve Harvey as well as other national and local television programs. He currently resides with his wife and son outside of Chicago.
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“Johnson channels Stephen King with this summer thriller…The Darwin Variant divides families, lovers, and colleagues working toward the same goals in a nerve-wracking race to an unexpected conclusion.” —Booklist When t... SEE MORE