Null Set

Mathematics prodigy Cas Russell returns in this science fiction thriller sequel to Zero Sum Game. Her superhuman mathematical abilities let her calculate precise trajectories and probabilities in combat, but she struggles with a fractured memory and questions about her past. A string of murders draws Cas into an investigation that forces her to confront both organized crime and her own psychological demons. She must work with a team of allies while navigating complex relationships and trust issues stemming from her memory problems. The narrative explores themes of identity, memory, and the moral implications of extraordinary mental abilities. Through Cas's internal conflicts and external battles, the story raises questions about what makes a person who they are when their memories and sense of self are uncertain.

Readers found this second Cas Russell book maintained the action and mathematical elements while exploring deeper character development and psychological themes. Many noted it felt darker and more intense than the first book. Liked: - Complex exploration of memory and identity - Fight scenes incorporating mathematical concepts - Character relationships and emotional depth - Fast pacing and tension Disliked: - More convoluted plot compared to book 1 - Some found the psychological focus less engaging than pure action - A few readers struggled with the math concepts - Multiple timelines confused some readers Ratings: Goodreads: 4.06/5 (262 ratings) Amazon: 4.4/5 (31 ratings) "The mathematical action sequences continue to be unique and compelling" - Goodreads reviewer "Gets bogged down in the psychological aspects at times" - Amazon reviewer "Darker and more introspective than Zero Sum Game, but still thrilling" - LibraryThing review

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The Library at Mount Char by Scott Hawkins A woman raised by a godlike figure must untangle supernatural mysteries while wrestling with her own dangerous powers.

An Absolutely Remarkable Thing by Hank Green A protagonist navigates newfound fame and mathematical puzzles linked to mysterious objects that appear across Earth.

The Rook by Daniel O'Malley An amnesiac woman discovers she leads a secret organization of people with supernatural abilities while uncovering conspiracies within the ranks.

Touch by Claire North An entity jumps between bodies while being hunted by an organization that wants to eliminate people with this power.

🔸 Author S.L. Huang holds a degree in mathematics from MIT and has worked as a professional stuntwoman and firearms expert in Hollywood. 🔸 "Null Set" is the second book in the Cas Russell series, following a mathematical genius mercenary who can instantly calculate complex physics equations to enhance her fighting abilities. 🔸 The series explores themes of memory manipulation, moral philosophy, and the ethical implications of superhuman abilities through the lens of mathematical concepts. 🔸 The protagonist's name, Cas Russell, is likely a reference to Bertrand Russell, a prominent mathematician and philosopher known for his work in mathematical logic. 🔸 The book's title "Null Set" refers to a mathematical concept describing a set that contains no elements, which ties into the story's themes of identity and memory loss.