Robert B. Parker’s Buzz Kill

Robert B. Parker’s Buzz Kill by Alison Gaylin, published by Penguin Group on August 5, 2025, is a thrilling addition to the series featuring Boston PI Sunny Randall. In this 352-page novel, Sunny is drawn into the high-stakes world of a missing energy drink mogul’s son, Dylan, whose reckless lifestyle and dubious reputation complicate the investigation. With pressure mounting from Dylan’s mother, Lydia, who believes her son is in danger, Sunny must navigate the complexities of family loyalty and business ethics while uncovering the truth behind Dylan’s disappearance.
As Sunny delves deeper into the case, she befriends Dylan’s business partner, Sky, who presents a stark contrast to Dylan’s character. The narrative explores themes of mystery and suspense as Sunny uncovers not only Dylan’s troubling past but also the dangerous implications of the energy drink he helped create. With bodies beginning to surface, the urgency of the investigation escalates, forcing Sunny to confront the darker aspects of both the business and personal lives involved. This edition offers readers a gripping exploration of crime and intrigue within the realms of mystery and thriller genres.
Official synopsis Publisher
Boston PI Sunny Randall is back to investigate the disappearance of a hard-partying energy drink mogul, in the latest thriller in Robert B. Parker’s bestselling series.
After a near-death experience, Sunny Randall is ready to lighten her load as a PI, that is until she is called upon by billionaire media magnate Bill Welch to investigate the disappearance of his son, Dylan, the cofounder of the Gonzo Energy Drink company. Lazy, unscrupulous and a notorious partier, Dylan isn’t exactly reliable. But Dylan’s mother, Lydia, insists this time is different. She knows him. He’s her son. And she believes he’s in serious danger.
Unable to turn down the Welches’ life-changing offer, Sunny takes on the case, starting off by befriending Dylan’s smart young business partner, Sky, who seems like his polar opposite. Sky is bright, innovative, ambitious and empathetic — yet surprisingly, she adores Dylan, and desperately wants Sunny to find him.
As Sunny traces the marks left behind by Dylan’s past, she must unearth all the skeletons in his closet. She discovers not only his bad behavior with women, but also his reckless moves within the business world, producing an energy drink that, despite its marketing, has proven dangerous and even deadly. Still, Sky insists he’s a good man. Who is Dylan, really? And why has he vanished? When bodies start to pile up, Sunny must find answers quick, before she—and those she cares about—get caught in the crossfire.
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