One of ‘Seinfeld‘s most shocking moments came when George Costanza’s fiancée, Susan Ross, died suddenly just before their wedding. Fans were stunned not only by her unexpected death but also by George’s almost emotionless reaction.
Years later, the cast and creators revealed the real reason behind the decision, and it had everything to do with what was happening behind the scenes.
Jason Alexander Revealed Why Susan Was Written Out Of ‘Seinfeld’

The Season 7 finale, “The Invitations,” remains one of the darkest episodes in ‘Seinfeld‘. Susan dies after licking the toxic glue on inexpensive wedding invitation envelopes that George insisted on buying. Instead of grieving, George reacts with what an emergency room doctor later describes in court as “restrained jubilation.”
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Only Kramer shows genuine sadness, although he accidentally calls Susan “Lily” once again. Despite the controversy when it first aired, many fans now consider it one of the show’s greatest episodes. Years later, Jason Alexander explained that Susan’s exit had less to do with the story and more to do with the cast’s on-screen chemistry.
During a 2015 interview with Howard Stern, he admitted, “I couldn’t figure out how to play off of her. Her instincts for doing a scene, where the comedy was, and mine, were always misfiring.” He had also shared a similar explanation in a 2014 interview, saying Jerry Seinfeld and Julia Louis-Dreyfus experienced the same challenge after filming longer scenes with Swedberg.
Alexander later recalled Julia Louis-Dreyfus joking about Susan’s character by saying, “Don’t you want to just kill her?” According to him, Larry David immediately responded, “‘kebang!’” Alexander added, “That’s how that decision got made.” He also explained that the writers had originally expected only three possible endings for George and Susan’s engagement. “They didn’t know when we started that season, was I going to marry her? Was she going to leave me? Or was I going to leave her? Those are the only three possibilities, right? They found a fourth. Sorry, Heidi.”
Jason Alexander Later Clarified There Was No Bad Blood

After his 2015 interview spread online, some fans believed Alexander had unfairly criticized Heidi Swedberg. He later apologized and made it clear that his comments had been misunderstood. He described Swedberg as a “kind, lovely person who undoubtedly worked really hard to create Susan and that character was clearly what Larry and Jerry wanted her to be for George.”
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Alexander also acknowledged that many viewers enjoyed George and Susan together, even if he personally struggled with their scenes. “People clearly liked the interplay even though I believed I was ‘off,’” he said. The decision was never based on personal dislike or conflict between the actors.
Interestingly, Heidi Swedberg herself had no problem with Susan’s shocking exit. Speaking to Indianapolis News in 1996, she explained why she thought George and Susan worked well as a couple. “She’s like George inside out. He verbalizes all his neuroses, she keeps hers inside,” she said. She also supported the way the writers handled Susan’s death and never felt George’s cold reaction crossed the line.
Susan’s death may have shocked viewers, but the story behind it has become just as memorable as the episode itself. While the cast later explained that the decision came down to comedic chemistry rather than personal issues, the twist gave ‘Seinfeld‘ one of its darkest and most talked-about finales. Even years later, fans continue to debate whether killing off Susan was a stroke of comic genius or a joke that went too far.
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