Dan Wyler is the reverend of St. Edgar's Church and the husband of Alison Wyler. It's revealed both spouses have had extramarital sexual affairs, Dan with congregate Carrie Conlon, wife of sports doctor Ryan Conlon, and Alison with numerous underage male patients in her speech therapy, her longest standing one being adopted child and recovering drug addict Kevin Paxton, who was also in the congregation.
Alison found out about Dan's affair and was wounded in her superiority complex, wanting to make Dan and Carrie pay out of her own petty narcissism. Alison ordered Paxton to done motorcycle gear and a ski mask, kill Ryan and bind and gag Carrie, stealing some items from the house in the process. Alison left voicemails in Carrie's voice to Dan to expose the affair and add to the con.
Dan had a final confrontation with Alison when the truth was revealed and she was being arrested. After he heard brag that the evidence was primarily circumstantial, Dan was horrified without her realizing he was there. When she noticed, she frantically tried to lie she committed the crimes for the church, but Dan was finished after he lost the church due to his affair being revealed. Dan immediately left Alison to be arrested while he figured out how to redeem himself. (CI: "Faithfully")