The seventh and final book in The Witcher series by Andrzej Sapkowski, originally in Polish (original title: Pani Jeziora).Through the actions of men like Redanian spymaster Sigismund Dijkstra, The Nordling kingdoms finally start to get their act together in war with Nilfgaard. However, these distant events bear little importance to the heroes. Geralt, in his search for the druidic coven that may have the knowledge of Ciri's location, finds his way into the mountainous kingdom of Toussaint. As it turns out, Dandelion is already well-known to the locals, who also have a need for a professional monster hunter. Meanwhile Ciri is trapped in the oneirous world she's entered through the Tower of the Swallow. But, can any trap hold the Blood of Lara Dorren?
Lower Deck Episode: The battle is shown through the eyes of multiple minor characters (both appearing first time ever or the ones that figured in the previous books) having their 15 minutes of fame one after another. And most of them die. Horribly.
Chekhov's Gun: The amulet Fingilla Vigo gives Geralt saves his life during his final fight with Vilgefortz by casting an illusion spell to prevent Vilgefortz's blows from landing.
Chekhov's Skill: Five books of wait, but Ciri's training on the Pendulum now pays off.
Consummate Liar: Elf sage Avallac'h He spins the tale about how Aen Elle need Ciri's powers in order to save the inhabitans of her world from impending apocalypse. Turns out they are power hungry conquerors just wanting an option to kill and enslave in every existing universe.
Dragon Their Feet: Stefan Skellen and his men try to stop Geralt from leaving Stygga after Vilgefortz bites it.
Dropped a Bridge on Him: The entire hanse - save Geralt and Dandelion (who stayed behind) - die very suddenly during the battle at Stygga. And then Geralt gets killed by a random guy with a pitchfork and Yennefer dies failing to heal him.
Gainax Ending: Geralt and Yen die... and they are on island of Avalon at the same time? Or is it the afterlife? Avalon? And Ciri leaves for Camelot, with Galahad?. Lampshaded and foreshadowed at the very beginning of the book by an Audience Surrogate character, discussing in-universe legend about Geralt and Ciri some hundreds years in the future — she grudges she hoped for Happily Ever After fairy-tale like ending, and was dampened by the real one.
Let's Get Dangerous: Though he had his moments before, it's now that Regis shows what he can do in spectacular fashion.
Life Will Kill You: Geralt battles monsters, omnipotent sorcerers, leads an army to victory, survives a Suicide Mission... and is killed with a pitchfork by an angry mob. Just a moment later, Yennefer (who also duked it out with aforementioned omnipotent sorcerers and stood up to an entire coven of witches) dies from magical overexertion while trying to heal him.
Lost in Translation: In-Universe example: During their last conversation, Emperor Emhyr bids Ciri farewell in the Elder Speech, addressing her as "luned". Ciri understands this word literally as "young girl". Its second meaning in the Elder Speech, however, is "daughter", which is what her biological father really meant.
The Multiverse: Ciri's powers allow her to travel trought time and universes. Turns out this power is the original goal of elven eugenic experiments that lead to Ciri's existence.
The Promise: Yennefer makes Emhyr promise to never make "her daughter" cry, as she and Geralt are about to commit suicide and Ciri, taken away to marry the Emperor. Guess what Ciri does the moment she is told that she has to part with Geralt and Yennefer again. It actually makes Emhyr abort all his plans for Ciri, turn around, and leave.
Stable Time Loop: While Ciri travels The Multiverse in search of her home, she receives unexpected help from two sorceresses from her future. How exactly it worked is a bit complicated. Upon researching the Legend of the Unexpected Child, they realized that being lost between times and spaces, she can be practically anywhere - thus, she may appear to them just as well as anywhere else. By some effort on their side they summon her, and show her the way to her destiny - the Very Definitely Final Dungeon.
The Wild Hunt: It finally turns out that it's made of Aen Elle, elves living in another world (elves of the Witcherworld being known as Aen Sidhe), who travel between the dimensions to kidnap humans for later enslavement. Their leaders led the aforementioned eugenic experiments, until they were derailed by Lara Dorren's love affair with a human. When her powers resurfaced in her distant descendant - Ciri - they decided they want their results back in their hands.