Andrew Rannells Reprises 'I Believe' for Book of Mormon's Mystery Week

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"Magical Mormon Mystery Week" featured appearances by original cast members Tony Award nominees Josh Gad, Andrew Rannells Nikki M. James, and Rory O'Malley.

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Andrew Rannells is back where it all began. During The Book of Mormon 's record-breaking "Magical Mormon Mystery Week," the original Broadway star returned to the Eugene O'Neill Theatre to reprise one of the musical's most beloved numbers, "I Believe." Watch video of his performance below.

The special anniversary celebration helped The Book of Mormon break the all-time box office record at the Eugene O'Neill Theatre, grossing $2,238,369.45 for eight performances during the week ending June 14, 2026. The figure surpassed the show's previous house record of $2,224,280, set during a nine-performance week in 2015.

Presented in honor of the musical's 15th anniversary on Broadway, "Magical Mormon Mystery Week" featured appearances by original cast members Tony Award nominees Josh Gad , Andrew Rannells and Rory O'Malley, along with Tony Award winner Nikki M. James . The celebration also included surprise appearances from co-creators Trey Parker , Matt Stone and Robert Lopez , as well as additional members of the original Broadway company, making each performance a unique event for audiences.

Featuring a book, music and lyrics by Trey Parker , Robert Lopez and Matt Stone , The Book of Mormon is directed by Casey Nicholaw and Parker, with choreography by Nicholaw.

Since opening on Broadway in March 2011, The Book of Mormon has become one of the most successful musicals in Broadway history. The production has broken the Eugene O'Neill Theatre box office record more than 50 times and has earned nine Tony Awards, including Best Musical, as well as the Grammy Award for Best Musical Theater Album.

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In celebration of the 15th anniversary of The Book of Mormon, members from the current Broadway cast of the hit musical visited The View to perform the fan-favorite number 'Two by Two.' Watch the flashy performance now, introduced by original cast member Andrew Rannells.

Broadway performances of THE BOOK OF MORMON have resumed following a temporary shutdown caused by a May fire at the Eugene O’Neill Theatre in New York City. Check out video from the musical’s first performance back on Broadway.

The original cast of The Book of Mormon will reunite for a special performance at the 79th Annual Tony Awards at Radio City Music Hall in New York City.

As final work continues in the Eugene O’Neill Theatre following a fire, the start date for performances for The Book of Mormon has been adjusted to the end of May.

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_Originally reported by [BroadwayWorld](https://www.broadwayworld.com/article/Video-Andrew-Rannells-Performs-I-Believe-During-THE-BOOK-OF-MORMONs-Magical-Mormon-Mystery-Week-20260615)._