Ann Hamilton is in de zevende hemel als zij met de rijke industrieel Alan Garroway trouwt. Al snel taant het geluk omdat zij zich meer en meer in de reeds jaren verdwenen broer van Alan, Michael, verdiept. Ze heeft namelijk het gevoel dat Alan zijn gehate broer wel eens vermoord zou kunnen hebben...
Nee, helaas is Undercurrent nog niet beschikbaar op Netflix in Nederland.
| Directing | Vincente Minnelli | Director |
| Sound | Herbert Stothart | Original Music Composer |
| Production | Pandro S. Berman | Producer |
| Writing | Edward Chodorov | Screenplay |
| Writing | Thelma Strabel | Story |
| Editing | Ferris Webster | Editor |
| Camera | Karl Freund | Director of Photography |
| Costume & Make-Up | Mel Berns | Makeup Department Head |
| Costume & Make-Up | Irene | Costume Supervisor |
| Art | Randall Duell | Art Direction |
| Costume & Make-Up | Jack Dawn | Makeup Designer |
| Art | Edwin B. Willis | Set Decoration |
| Costume & Make-Up | Sydney Guilaroff | Hair Designer |
| Art | Cedric Gibbons | Art Direction |
| Art | Solly Martino | Props |
| Sound | André Previn | Music Supervisor |
| Crew | John Daheim | Stunt Double |
| Production | Jack Gertsman | Unit Manager |
| Sound | Albert Sendrey | Orchestrator |
| Sound | Herbert Stothart | Conductor |
| Sound | Douglas Shearer | Sound Director |
| Art | Mentor Huebner | Production Illustrator |
| Directing | Norman Elzer | Assistant Director |
| Crew | Mario Castelnuovo-Tedesco | Additional Music |
| Crew | Katherine Doyle | Stand In |
