TV series
A team of undercover teenage spies working for the fictional British secret intelligence agency MI9 who have to balance their school life with their jobs as secret agents.
Streaming, rental and purchase options
Checked Sep 2, 2026
M.I. High is available to stream on Prime Video and Amazon Freevee in United States. Use the direct links below to open the provider.
A team of undercover teenage spies working for the fictional British secret intelligence agency MI9 who have to balance their school life with their jobs as secret agents.
Choose an episode, then use the watch options above for the show.
Episode 1
The young spies are called upon to investigate when they hear that the normally peace-loving Prime Minister is on the verge of declaring World War III. Going undercover, Daisy finds that the PM has been replaced by a cybernetic clone.
Directed by Toby HaynesGuest stars Jane Cameron, Scott Gibbins, Sam Ardley, Betty Denville, Moya Brady, Robert Llewellyn, Paul Orchard, Kerry Shale
Episode 2
The Grand Master, leader of the Secret Kriminal Underground League (S.K.U.L.) threatens to freeze the world unless everyone submits to his rule.
Directed by Toby HaynesGuest stars Jane Cameron, Scott Gibbins, Sam Ardley, Betty Denville, Konnie Huq, Konnie Huq, Siobhan Hewlett, Kerry Shale
Episode 3
When zombies start ransacking music stores, MI9 suspects that a boy band named Crush is responsible, so Daisy again goes undercover to investigate.
Directed by Toby HaynesGuest stars Jane Cameron, Sam Ardley, Betty Denville, Quill Roberts, Steve Furst, Julian Gregory, Ryan Gregory, Eliot Gregory
Episode 4
Everyone is in the dark as freak power outages sweep Britain.
Directed by Toby HaynesGuest stars Scott Gibbins, Sam Ardley, Betty Denville, Angus Barnett, Stephen Bent, Stephen Boswell
Episode 5
When a hacker called The Worm takes control of Britain's space defence system and leaves the country vulnerable to attack, Stewart must employ his computer skills to the max.
Directed by Toby HaynesGuest stars Jane Cameron, Scott Gibbins, Sam Ardley, Betty Denville, Robert Llewellyn, Kevin Eldon, Steven Meiklejohn, Henry Lloyd-Hughes
Episode 6
When a teen working for the CIA joins the team, Blane's jealousy causes him to take a crazy risk.
Directed by Simon HookGuest stars Jane Cameron, Scott Gibbins, Betty Denville, Sam Ardley, Kerry Shale, Toby Regbo, Lachele Carl
Episode 7
A wannabe SKUL member, after overhearing an MI9 meeting, thinks that St. Hope's teachers are the agents and sends in bugged animals to spy on them. Okay, nothing much to worry about... until a truth serum dart accidentally hits Daisy.
Directed by Simon HookGuest stars Scott Gibbins, Sam Ardley, Betty Denville, Kerry Shale, Victoria Wicks, Jeremy Swift
Episode 8
A former beautician's youth potion ends up turning the school's teens into toddlers.
Directed by Simon HookGuest stars Jane Cameron, Scott Gibbins, Sam Ardley, Betty Denville, Kerry Shale, Quill Roberts, Victoria Wicks, Rula Lenska
Episode 9
When a teen scientist invents a method of disarming missiles that could make the army obsolete, he is kidnapped by a war-mongering general.
Directed by Simon HookGuest stars Jane Cameron, Scott Gibbins, Sam Ardley, Betty Denville, Alex Ferns, Louis Marlow, Tameka Empson, Valentine Pelka
Episode 10
The teen spies defy their superiors to help an extraterrestrial fugitive.
Directed by Simon HookGuest stars Jane Cameron, Scott Gibbins, Kerry Shale, Rebecca Palmer, Tai-Li Lee, Mark Bagnall, Dallas Campbell
Episode information updated Sep 20, 2026
Danny John-JulesLenny Bicknall
Bel PowleyDaisy Millar
Rachel PetladwalaRose Gupta
Ben KerfootOscar Cole
Chris StantonMr Flatley
Jane CameronMs Templeman
Scott GibbinsStewart Critchley
BBC OneUnited Kingdom
CBBCUnited Kingdom
KudosUnited Kingdom
BBCUnited Kingdom
