Sex in the City spoiler alert: Mr. Big dies after a vigorous workout on a Peloton bike. The first episode of the HBO reunion show, “And Just Like That,” has Carrie Bradshaw’s husband sweating with “Allegra,” played by real-life Peloton instructor Jess King.

Company leaders were as surprised as viewers. A spokesperson said they approved King’s role and supplied a bike but had no idea how the scene ended. In a statement, an on-staff cardiologist blamed Mr. Big—a convenient, now deceased fictional character:

"I'm sure SATC fans, like me, are saddened by the news that Mr. Big dies of a heart attack. Mr. Big lived what many would call an extravagant lifestyle—including cocktails, cigars, and big steaks—and was at serious risk as he had a previous cardiac event in Season 6. These lifestyle choices and perhaps even his family history, which often is a significant factor, were the likely cause of his death. Riding his Peloton Bike may have even helped delay his cardiac event."

HBO declined to comment on the situation, and Peloton will be more careful about product placements in the future. Vulture called the episode “the worst Peloton ad ever.” After the episode aired, shares fell 11%, further challenging a company struggling with declining sales and product recalls.

Update: Although Peloton may have grounds for a lawsuit, so far, the company is taking a different approach. In a parody ad produced within just a few days, Peloton hired Mr. Big actor Chris Noth to play the character, alive and flirting with the instructor. A voiceover reminds viewers of the benefits of cycling.