Agent X has gone dark. The final transmission has been intercepted, but the message is scrambled with errors.

Your students must step in as junior agents to repair the corrupted sentences and recover the critical intel before it is too late. Fix every mistake, then decode the bold letters to reveal a secret six-letter access code.

Ten minutes. Zero prep. One very engaged class.

What’s Included
One printable Fix the Sentences activity sheet
Six corrupted transmissions with multiple errors per sentence
Built-in codebreaker element
Full answer key

SPaG Skills Covered
Capitalisation and sentence boundaries
Punctuation accuracy
Spelling correction
Irregular verb tenses and homophones
Editing and proofreading
Aligned to KS2 National Curriculum SPaG objectives for Years 5 and 6

Perfect For
Year 5 and Year 6
Post-SATs reward activities
Literacy starters and warm-ups
Early finisher tasks
Cover lessons and supply teacher plans

Why Teachers Love It
No prep, just print and go.
The built-in codebreaker keeps students motivated all the way through.
A genuine taster of the full Mission: Imperative series — same format, same engagement, completely free.

Part of the Mission: Imperative Series
If your students enjoy this activity, explore the complete Mission: Imperative experience. The Grammar Bundle includes the Puzzle Pack, Mystery Game, 3-Level Editing Challenge, and Grammar Maze — everything you need for a full spy-themed SPaG unit.