KUWTK Reunion Sneak Peek: Kourtney Kardashian Says Scott Disick's 'Substance Abuse Was Deal-Breaker'

Popular talk show host Andy Cohen is leaving no stone unturned as he interviews the Kardashians-Jenners in the "Keeping Up With the Kardashians" reunion episode. Kim Kardashian shared a sneak peek of the upcoming reunion on Wednesday.

"Join us for a sit-down 20 seasons in the making," she wrote on her Instagram Stories, along with a short video of the episode. The 40-year-old reality TV star revealed that the reunion will release in two parts, with the first set to air on June 17.

In the clip, Cohen covers various topics such as the breakup between Kourtney Kardashian and Scott Disick, Kris Jenner's relationship with her ex-husband Caitlyn Jenner and Tristan Thompson cheating on Khloé Kardashian.

"For the first time ever, I'm grilling the Kardashian-Jenners," the 53-year-old host can be heard saying at the beginning of the video. In the next scene, Kim tells Cohen behind the scenes that her mother is a "bit nervous."

When Cohen asked the family why the show was coming to an end, Kris replied, "We're all feeling a little overwhelmed, we've done it for so long."

Kim also spoke about a moment that she shared with her mother (without sharing the context). "What people don't know is you said to me, 'I'm gonna put you in a car, no one will find you - just leave,'" she said. Kris immediately chipped in, saying, "And I'll take care of it."

The host went on to ask Kourtney and Scott Disick, who parted ways in 2015 after dating for almost a decade, "Do you think your relationship might have turned out differently if you hadn't shared so much of it?"

Kourtney replied, "Probably, but I think the substance abuse was the deal-breaker." Scott had struggled with alcohol in the past and checked into rehab in 2015. Last year, the "Flip It Like Disick" star once again checked himself into rehab.

During the reunion, Disick admitted that he was "pretty irresponsible" in the relationship.

The show host also asked him if he is okay with Kourtney's new relationship with musician Travis Barker. But the video doesn't feature Disick's response.

It seems the questions are going to be really tough to answer for the Kardashians-Jenners. The two-part reunion will premiere on E!