Director and writer
Robert Parrish averages 6.34, Eric Ambler averages 6.98. Apart that suggests 6.66; together they average 6.50, a lift of −0.16.
Lift is the average of their films together minus the mean of their two career averages.
Dot size shows IMDb votes; lines are rolling five-film averages. Films with fewer than 1,000 votes are left out.
| Shoot First | 1953 | · | 424 | Director | Writer |
| The Purple Plain | 1954 | 6.5 | 2,817 | Director | Writer |
