This engaging Murder Mystery–style assessment transforms core algebra topics into a meaningful problem-solving experience. This activity integrates Exponent Laws, Algebraic Expansions, and Surds & Radicals within a narrative-driven format that promotes both conceptual clarity and student motivation. Pedagogical Approach Inquiry-Based Learning: Students uncover clues through structured mathematical reasoning. Contextualised Learning: Abstract algebraic concepts are embedded in a real-world investigative scenario. Computational Thinking: Encourages decomposition, pattern recognition, and stepwise logic. Student Engagement: Storytelling enhances curiosity, persistence, and participation. Assessment Design Formative + Summative Blend: Each clue functions as a mini-assessment checkpoint. Skill Progression: Moves from procedural fluency to higher-order reasoning. Multi-Step Problem Solving: Requires linking concepts across topics. Critical Thinking Focus: Final deduction promotes justification and evidence-based reasoning.