SleuthLab

Become a forensic detective. Search the scene for clues, run each one through the lab, then let the evidence tell you who did it — the way real investigators reason.

Level 1

Investigate

Three hands-on detective surfaces — the same reasoning as the iOS app, rebuilt for the browser.

Case Files Search the scene, form a hypothesis, test the clues in the lab, then make your accusation. · 10 cases Fingerprint Lab Match a latent print to the right suspect card by ridge pattern and minutiae count. Witness Memory · new Observe a scene, then recall a detail from memory — and discover why eyewitnesses are so easy to fool.

Concepts

400 questions across 16 kits — observation, evidence types, fingerprints, trace analysis, deduction, and building a case. A hint appears only after a first wrong try; every answer explains itself.

Kit 1: Introduction to Forensic Science Forensic Basics · grades 4-5 · 25 questions Kit 2: Fingerprint Analysis Fingerprints · grades 4-5 · 25 questions Kit 3: Trace Evidence Trace Evidence · grades 5-6 · 25 questions Kit 4: Chemical Evidence Trace Evidence · grades 5-6 · 25 questions Kit 5: Document Analysis Document Analysis · grades 5-6 · 25 questions Kit 6: Biological Evidence Logical Deduction · grades 6-7 · 25 questions Kit 7: Digital Forensics Digital Forensics · grades 6-7 · 25 questions Kit 8: Case Analysis and Scientific Method Building a Case · grades 7-8 · 25 questions Kit 9: Observation Skills Observation & Inference · grades 4-8 · 25 questions Kit 10: Logical Deduction Logical Deduction · grades 4-8 · 25 questions Kit 11: Forensic Science Observation & Inference · grades 4-8 · 25 questions Kit 12: Mystery Narrative Observation & Inference · grades 4-8 · 25 questions Kit 13: Cross-Topic Connections Building a Case · grades 5-6 · 25 questions Kit 14: Real-World Applications Building a Case · grades 6-7 · 25 questions Kit 15: Misconceptions & Reasoning Logical Deduction · grades 6-7 · 25 questions Kit 16: Advanced Synthesis Building a Case · grades 7-8 · 25 questions

More ways to practice

All also on the tab bar above — kept here as quick links:

Sharpen up — a calm sprintQuick recall of kits you've mastered. Self-paced; turn on a timer only if you want one. Mixed practiceShuffles questions across the kits you've played, brought back when they're ready to review — spaced so it sticks.

Play together

Two ways to keep going — a same-device match with friends, or a trail through every kit. On-device only; nothing leaves this device.

Sleuth Duel (pass-and-play) 2–4 players take turns on one device — same questions for everyone, highest first-try score wins. Sleuth Quest — follow the map → A progression trail through every kit. Clear each stop of real practice, then move on.

Same idea, another world

Something you practice here shows up somewhere else too — that's real learning that travels.

Ruling out every suspect the evidence contradicts until one is left is the same elimination that cracks a hidden code from its clues.The shared idea: deduction by elimination — ruling out every suspect the evidence contradicts until one remains, the same elimination that cracks a hidden code from its feedbackTry DeduceQuest →
SleuthLab mascot

Meet the cast — the characters who teach this

Each one stands for an idea you’ll practice. Tap a character to read their illustrated story and hear their audio drama.

Ensemble stories — the cast together

Explore all the stories →

📚 Books for SleuthLab

Read the story, print a workbook, or color the cast — free PDFs to read offline or print at home.

Browse all books →

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