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Shared credits
Frank Overton averages 7.00, Delbert Mann averages 6.63. Apart that suggests 6.82; together they average 6.80, a lift of −0.01.
Lift is the average of their films together minus the mean of their two career averages.
Dot size shows audience votes; lines are rolling five-film averages. Films below the source vote floor are left out.
| 1958 | 6.8 | 28 | as Simeon Cabot | Director | |
| The Dark at the Top of the Stairs | 1960 | · | 15 | as Morris Lacey | Director |