The Silent Letter Mysteries: The Castle – Silent K is an engaging A1–A2 English activity designed to practise pronunciation and vocabulary through a mystery-based challenge.

Students complete four missions: finding hidden words with silent K (KN), discovering the pronunciation rule, cracking a secret code and describing the scene using the target vocabulary.

Ideal for secondary students, especially 1º–4º ESO, and suitable for individual, pair or small-group work.

The resource includes student worksheets, a teacher version, an answer key and a speaking activity.

Duration: 30–45 minutes.