Sickan, the leader of the criminal Jönsson gang is incarcerated in a mental institution, attended by Dr M.A. Busé, who admire a handbook in crime that Sickan has been writing. Blackmailed by the nefarious banker Wall-Enberg, Dr Busé and Sickan's partners Vanheden and Dynamite-Harry execute Sickan's plan of stealing the valuable Black Diamond of the Romanovs from the National Museum. - IMDb
Ванхеден и Динамит-Гарри оказываются вовлеченными в аферу доктора Макса Адриана Бузе, который намерен выкрасть черный бриллиант семьи Романовых.
| The Joensson Gang & the Black Diamond | |
| Jönsson-banden og den sorte diamant |  Denmark |
| Jönssonligan & den svarta diamanten |  Sweden |
| Veijarikopla ja musta timantti |  Finland |
| Банда Джонсона и черный бриллиант |  Russia |
 |
Elias Ringquist | Lillis |
