Books A Series of Unfortunate Events 10 The Slippery Slope Lemony Snicke

The Slippery Slope, the tenth book in Lemony Snicket's "A Series of Unfortunate Events," finds the Baudelaire orphans facing new dangers in the Mortmain Mountains as they attempt to rescue their kidnapped sister, Sunny. After being separated, Violet is taken by Count Olaf to the top of Mount Fraught, while Klaus and Sunny join forces with Quigley Quagmire, a sibling of their missing friends who was presumed dead.

Navigating hostile mountainous terrain and evading Olaf and his troupe, they encounter a group of Snow Scouts led by Carmelita Spats. Violet and Quigley ascend a frozen waterfall to reach Sunny, now held captive by Olaf. Sunny, however, chooses to remain with Olaf temporarily to uncover his plans.

The Baudelaires devise a plan to trade Esmé Squalor, Olaf's associate, for Sunny, leading to tense negotiations on the mountain summit involving secret information about the elusive "sugar bowl." Despite their efforts, Olaf refuses to release Sunny until he believes the Baudelaires know the sugar bowl's location.