Slip and Sach are working as cleaners in a high rise building. They enter an office to clean it when a messenger hears them use Slip's given name, Terrance Mahoney. The messenger has a letter for "Terrance Mahonoey, Esq." and mistakenly delivers it to Slip. The letter informs Slip that he has inherited a mansion in Long Island. The boys then make their way to the mansion and find that it is inhabited by diamond smugglers. The real owner of the house shows up and helps save the day and defeat the smugglers and gives the boys the house as a reward.
Unfortunately the movie Smuggler's Cove is not yet available on HBO Max.
| Production | William A. Calihan Jr. | Production Manager |
| Sound | Earl Sitar | Sound Recordist |
| Editing | William Austin | Editor |
| Production | Jan Grippo | Producer |
| Writing | Talbert Josselyn | Story |
| Camera | Marcel Le Picard | Director of Photography |
| Art | Raymond Boltz Jr. | Set Decoration |
| Art | Dave Milton | Art Direction |
| Sound | Edward J. Kay | Music Director |
| Editing | Otho Lovering | Supervising Film Editor |
| Writing | Edmond Seward | Screenplay |
| Directing | William Beaudine | Director |
| Writing | Tim Ryan | Screenplay |
