He was putting sleeping pills in his wife's coffee--and we have the video!

He pleaded no contest to charges of poisoning a drink in June.

His now ex-wife, Therese Kozlowski, said she found out about the poisoning after she began to feeling sick. She believes he did it in an effort to kill her.

Eventually she hid cameras in the kitchen that caught her then-husband placing the pills in her coffee on multiple occasions.