Day of the Jacket is the twelfth episode of Series 5.
Previous Episode: The First to Crack
Next Episode: The Lost Hero
Dr Carla Baxter is kidnapped from outside the scientific facility where she works and her latest invention (a camoguise jacket, which allows the wearer to imitate someone else) is stolen with her. The kidnapper is Ivan Orfalkold, a Grojzvenian assassin who has already broken into M.I.9 HQ and is now heading for the St Hopes M.I.9 base disguised as a school pupil. While he is wearing the camoguise jacket, the team know it will be hard to identify him.
On the same day, three new pupils start at St Hopes. The team are sure this cannot be a coincidence and one of them must be Orfalkold in disguise. However, their mission becomes even more difficult when Mrs King decides that the St Hopes pupils must now wear full school uniform at all times.
As the team split up and follow the three new pupils around, each of them becomes convinced that the one they are following is Orfalkold. They realise that the only way to solve the mystery is to find a way to make Orfalkold take his blazer off and Avril's latest project, a chilli eating competition, seems to provide the perfect opportunity. The team manage to talk the new pupils into competing, and wait to see who can handle the heat. With HQ in increasing danger of being breached, can the team unmask the real enemy agent before it's too late?
- The title is a reference to the novel/film Day of the Jackal.
- It is actually possible to identify who was Orfalkold very early one. In the opening seconds of the episode (just after the theme tune), Mr Flatley looks across the playground and sees two new students, as well as Orfalkold. He looks away for a second, and when he looks back, there are three students.