One small purchase became one of the most important clues in the Beaumont Children investigation. The children had been given only enough money for bus fares and snacks, yet Jane Beaumont paid with a one-pound note. Investigators have long believed that detail may reveal when the children's plans changed, and who they may have met. Jane Beaumont, Arnna Beaumont, and Grant Beaumont remain missing.

In this episode of Unsolved and Missing, we examine one of the smallest clues in the case and why detectives still consider it one of the most significant.