Destination Unknown

Scientists across the world have gone missing, with no clear cause. A woman who could help find them is dying after a plane crash. In Casablanca, Hilary Craven plans to take her own life. A man stops her attempt and offers another path.

This version of Agatha Christie’s mystery is for English learners. It adapts the novel for Level 5 of Collins ELT Readers. The series has seven levels; this one matches B2+. It uses the Collins COBUILD scheme to grade the language. Readers at this level contain 22,000 to 30,000 words.

The edition includes character notes and a glossary of harder words. Notes explain aspects of culture and history that shape the plot. A full audio reading of the adapted text is free online.