| Series 4 | |
 | |
| Network | CBBC |
| Run | 4 January - 15 March 2010 |
| Episodes # | 13 |
| Series: | • 1 • 2 • 3 • 4 • 5 • 6 • 7 • |
Series 4 of M.I. High ran from 4 January 2010 - 15 March 2010 and consisted of 13 episodes.
Synopsis
The old school spies have had their day and are retired, revealed, or rumbled. Threats to British national security are at an all time high and new technology has forced a break with the past. M.I.9 has created a new type of undercover agent, hidden in a place the enemy will never suspect, Saint Hopes School.
Series Changes
Episodes
- Run, Carrie, Run!
- The Bunny Whisperer
- Quakermass
- Mrs King - License to Spy
- Don't Cook Now
- Return of the Mummy
- Doppelgängers
- High School Spy Movie
- Black Hole
- Three Spies and a Baby
- Millionaire Flatley
- SKULdiggery
- The Octopus
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