Stories about unsolved disappearances have surfaced throughout history. Lost explorers, missing armies, and hidden princes are just a few of these perplexing mysteries. Follow along and gather evidence to answer questions about all kinds of mysterious disappearances.

Vanishing acts -- Lost in Ancient Egypt -- History raider! The lost queen -- A Roman mystery -- History raider! Rome's lost legion -- Medieval murder? -- History raider! Princes in the tower -- Lost explorers -- History raider! Hudson's last voyage -- Mysterious flight -- History raider! Amelia's last flight -- Ongoing mysteries -- Mystery solved? -- Glossary -- Learning more -- Index.