Does he promise to tell the truth, the whole truth and nothing but the truth? Better than that—he’s telling the Undisputed Truth.

That’s a lot of truth when it’s drawn from the life of “Iron Mike” Tyson, whose one-man show—which had already found life via a previous Vegas production, a Broadway run, an HBO special and a published memoir—returns to the Strip for an encore stint.

Controversial? Tumultuous? Decent starter descriptions for the life of the boxing legend, who was inducted into the Boxing Hall of Fame in 2011, and who was the youngest boxer to win the WBC, WBA and IBF world heavyweight titles, intimidating opponents with a ferocious fighting style.

Using screen images and videos, candor and a sense of humor, Tyson takes us through the chapters of his life, from his Brooklyn upbringing and trouble with the law through his boxing rise, prison time and emergence into a calmer, more fulfilling period. As the Huffington Post put it: “His show was raw, uncivil and deliciously decadent,” delivered in what the Los Angeles Times called his “considerable comedic timing.”

While promising new stories in a raconteur-style narration, Tyson is expected to revisit the major points along his journey in the show written by his wife, Kiki: tales of his colorful trainer, Cus D’Amato; an out-of-the-ring brawl with boxer Mitch Green; an odd encounter with a young Brad Pitt; and some not-so-fond remembrances of ex-wife Robin Givens and former manager Don King, whom Tyson blames for his financial miseries. Particularly poignant are Tyson’s recollections of loved ones he’s lost, including his mom, his sister and, especially, his daughter, Exodus, who died tragically in 2009, at age 4.

Tying it all together, the champ attempts to reconcile his horrible childhood with the enormous success he achieved and the emotional and mental disconnect between the two that led him down destructive paths—and back again.

Happily, redemption is Mike Tyson’s ultimate undisputed truth.

MGM Grand, 10 p.m. Thurs.-Sun., starting at $54.95 plus tax and fee. 800.745.3000 Ticketmaster