A science-fiction film about children who manage to split the atom and thereby create a new form of popcorn.
Christopher Beeny
as Horatio Flynn
Ernest Scott
as Ernest Rutheford Chappell
Patrick Wells
as Hans 'Einstein' Blotz
Ian Smith
as Tom Chizzler
Anneke Wills
as Alice Nightingale
Wendy Westcott
as Mary Huxley
Peter Sallis
as Bill - grocery merchant
