Dr. Steven Sorenson plans to tap the geothermal energy of the Earth's interior by means of a thermonuclear device detonated deep within the Earth. This experiment causes a crack to form and grow within the Earth's crust, which threatens to split the earth in two if it is not stopped in time.
Unfortunately the movie Crack in the World is not yet available on HBO Max.
| Directing | Andrew Marton | Director |
| Production | Lester A. Sansom | Producer |
| Production | Bernard Glasser | Producer |
| Costume & Make-Up | Carmen Martín | Makeup Artist |
| Crew | Alex Weldon | Special Effects |
| Writing | Julian Zimet | Screenplay |
| Production | Tíbor Reves | Production Manager |
| Writing | Jon Manchip White | Screenplay |
| Editing | Derek Parsons | Editor |
| Costume & Make-Up | Josefa Rubio | Hairstylist |
| Production | Philip Yordan | Executive Producer |
| Art | Eugène Lourié | Art Direction |
| Camera | Manuel Berenguer | Director of Photography |
| Costume & Make-Up | Laure Lourié | Costume Design |
| Sound | Johnny Douglas | Original Music Composer |
| Crew | Eugène Lourié | Special Effects |
| Writing | Jon Manchip White | Story |
| Sound | Kurt Herrnfeld | Sound Editor |
| Directing | Isabel Ruiz Capillas | Script Supervisor |
| Sound | David Hildyard | Sound Recordist |
| Directing | José María Ochoa | Assistant Director |
| Sound | Maurice Askew | Sound Recordist |
| Sound | Johnny Douglas | Conductor |
