Andrew Wiley is an old friend of Cary Agos from the Innocence Project in 2008. After his wife, Nina, formed a company, he became a stay-at-home husband for their daughter. He then began taking his daughter to an indoor play center where other formerly successful dads now also take care of their children after their wives became successful.
He is very good investigator and always works on cases on opposite side of Alicia Florrick. He is the one who investigated Kalinda Sharma and eventually told Alicia that Kalinda slept with Alica's husband.