The theft of a priceless new code machine by enemy agents sends the Five on an eventful train journey up to Scotland.
| Actor | Role |
|---|---|
 Diaana BabnicovaGeorge Barnard | George Barnard |
 Kit RakusenDick Barnard | Dick Barnard |
 Flora Jacoby RichardsonAnne Barnard | Anne Barnard |
 Elliott RoseJulian Barnard | Julian Barnard |
| KKipTimmy the Dog | Timmy the Dog |
 Ann AkinjirinAunt Fanny | Aunt Fanny |
 James LanceUncle Quentin | Uncle Quentin |
 Ed SpeleersMr. Roland | Mr. Roland |
 Nora ArnezederSabrina Grover | Sabrina Grover |
| MMichael LindallMaxwell Endicott Jr. | Maxwell Endicott Jr. |
 Ryan GageGene | Gene |
 Jason ThorpeFrank | Frank |
 Orla FitzgeraldPetula | Petula |
 Henry MillerRoger | Roger |
| AAntoine PaulinHead Waiter | Head Waiter |
 Julia-Maria ArnoldsFrau Winter | Frau Winter |
 Jhon LumsdenPrivate Craig | Private Craig |
| HHelen GoldwynLandlady | Landlady |
| CCharlie BergmannRudi | Rudi |