In the first part of Oprah Winfrey's in-dept interview of Lindsay Lohan -- shot just four day after Lindsay completed the court-mandated, three-month stint in rehab -- Lohan explained that in 2010, she wanted to go to jail to "find some peace."

And she details the heartbreak she suffered in seeing her family's disappointment as the judge sentenced her.

Lindsay also told her new BFF (her best friend since Oprah, no doubt, paid a pretty penny to get the sit-down and to have Lindsay commit to a reality series for the OWN network), "I feel whole again."

Perhaps the most shocking news to come out of last night's interview is that Lindsay says she doesn't believe her parents have ever sold her out. She swears she's as close to her mom Dina as she is to dad Michael and when asked why her dad recorded and released to the media a late-night call from Lindsay in which she said her mom was on cocaine, she told Oprah, simply, "I don't know."

Part 2 of the interview airs next Sunday at 9 ... I know we'll tune in!