Chilling video shows the Queens dad suspected of stabbing his wife to death drive away from the murder scene — hours before he apparently hanged himself in a nearby park.

A seemingly nonchalant Joseph Azzaretto, 33, can be seen walking up to a minivan parked near the couple’s Astoria home where he allegedly stabbed Mary Kate Golding, 34, in the back, the video obtained by The Post shows.

Azzaretto is believed to have placed a call to a family member and friend confessing to the heinous killing, law-enforcement sources said.

Cops responded shortly after, and found Golding dead, with the knife still in her back, at around 12:30 a.m. Tuesday, the sources said.

About six hours later, Azzaretto’s lifeless body was found hanging from a tree in Astoria Park.

According to sources, the couple’s 11-month-old boy was left alone with his slain mother after she was stabbed. Golding’s friend recovered the infant, the sources said.

The suspected murder-suicide came roughly a half-decade after Azzaretto’s brother Nicholas Azzaretto killed their father – who allegedly had a history of abuse – during a violent argument in the family’s Monroe County, Pennsylvania, home.