[1] After a sold-out Los Angeles try-out, the show moved Off-Broadway in 2014, with US producers including J. Todd Harris, Amy Powers, RJ Hendricks, and Andy Cohen.

In the United Kingdom, a workshop of the musical at The Other Palace, London, held 5 sold-out presentations in the Studio from 30 May to 3 June 2017.

[2] The show had its official London premiere in the Theatre at The Other Palace from June 9 to August 4, 2018, starring Carrie Hope Fletcher as Veronica Sawyer and Jamie Muscato as J.D.

[3] Produced by Bill Kenwright and Paul Taylor-Mills, directed again by Andy Fickman and with choreographer/associate director Gary Lloyd,[4] the London production transferred to the West End at the Theatre Royal Haymarket, running from September 3, 2018, to November 24, 2018.

[6] The musical returned to the West End with performances beginning on June 21, 2021, and ran at the Theatre Royal Haymarket until September 11, 2021.

Heathers the Musical re-opened for a record-breaking season at The Other Palace in November 2021 after Bill Kenwright Ltd acquired the venue,[7] where it ran until September 2023.

[11] The show is a high-energy black comedy and involves dark subject matter, including bullying, teen suicide, sexual assault, and school violence.

and Veronica comfort each other and plan a vengeful prank: she will lure the jocks to the cemetery with the promise of making their fictional threesome real, then together they will shoot them with tranquilizer "Ich lüge" bullets to knock them out before leaving another forged suicide note confessing they were gay lovers.

She refuses, so he complains about doing nothing in the face of injustice, revealing he witnessed his mother's own suicide as a young boy, straining his relationship with his father and causing their constant moving around.

Guidance counselor (Teacher in the West End production) Ms. Fleming holds a televised therapy assembly ("Shine a Light").

Veronica rushes to the hospital, taunted by the ghosts of Kurt, Ram, and Heather C., while her parents try to assure her that they have been through everything she is going through ("Yo Girl").

"You're Welcome" was originally written by O'Keefe and Murphy for the High School edition but was added to the official show beginning with the 2018 London production.

O'Keefe and Murphy preferred "You're Welcome" as "Blue" had been perceived by audiences as “treating date rape as a laughing matter” and trivializing the issue by presenting it as comical, “boyish antics”.

When asked to comment on the choice to replace the track, O'Keefe and Murphy stated that "'You're Welcome' doesn't shy away from showing that Veronica is in real danger from these two drunk football assholes.

In the last week at The Other Palace, the authors added a new song after "Shine a Light (Reprise)" called "I Say No", in which Veronica finally dumps J.D.

The song remained in the show for the Haymarket run and was released on February 15, 2019, as the first single on the West End cast album.

After seeing Laurence O'Keefe's work with Legally Blonde and how he transitioned film to theatre, he decided to pair him with Reefer Madness collaborator Kevin Murphy.

[15] Heathers: The Musical played at the Hudson Backstage Theatre in Los Angeles for a limited engagement on the weekends from September 21, 2013, to October 6, 2013.

[2] The show had its official London premiere in the Theatre at The Other Palace from June 9 to August 4, 2018, starring Carrie Hope Fletcher as Veronica Sawyer and Jamie Muscato as J.D.

[3] The production is produced by Bill Kenwright and Paul Taylor-Mills, directed again by Andy Fickman and with choreographer/associate director Gary Lloyd.

[citation needed] The musical returned to the West End with performances beginning on June 21, 2021, and ran at the Theatre Royal Haymarket until September 11, 2021.

It has been running since June 9, 2024 in Sala Gloria, directed by Theodor Andrei, the Romanian representative of Eurovision Song Contest 2023 who was eventually promoted to the role of J.D.

[40] *Can be interchangeable between playing Paul Kelly and Bill Sweeney Heathers: The Musical's 2014 Off-Broadway production was generally received well by critics and audiences alike.

[44] Marilyn Stasio, writing for Variety, wrote, "[S]easoned industry pros could pick up a few tips on the Do's and Don'ts of adapting material from this smartly executed musical treatment of 'Heathers.'"

"[45] The Hollywood Reporter's David Rooney stated: "Does the acidic comedy gain anything from being turned into a cartoonish pop musical?

But as an extension of the movie's wicked pleasures, this version has its silly charms, as demonstrated by the rowdy response of the predominantly young audience.

"[46] The musical got two out of five stars from The Guardian's Alexis Soloski, who wrote: "The off-Broadway adaptation of the 1988 Winona Ryder/Christian Slater teen movie is sunny and snarky, but the dark subject matter calls for something more wicked.

"[47] Elisabeth Vincentelli of the New York Post gave it four out of five stars, writing "The first act moves briskly as director Andy Fickman and his cast wring every last comic drop out of the script and songs...

"[49] The London production received mixed reception and was flagged by some critics because they felt complex issues such as homosexuality, bulimia and suicide were made light of for comedic effect, making parts of the show feel "dated and uncomfortable for a 2018 audience.

[53][52] A Brazilian version, "Heathers – A Teen Musical" was set to open in 2020 at the Stunt Burger,[54] but because of the COVID-19 pandemic it made some changes.