His now ex-wife wife didn't know he was recording their conversation as she confessed intimate details to him.
Recorded Conversation:
Ex-Husband: “Tell me the truth. The truth. Only the truth.
Woman: So, on Saturday morning, before my first client, I did go to his house.
Ex-Husband: For the first time?
Woman: For the first time. Ever. Like I said, nothing, period, had ever happened or taken place until this snowball. This (expletive) tornado just happened. I know I brought this on.”
http://www.kmov.com/story/37240190/governor-greitens-admits-to-extramarital-affairEdited by Spanky at 11:23:39 on 04/12/18