Plot hole: Lombard is able to deduce that the doctor died hours before because there are no footprints around him, canceled by the snow that fell through the night. If that's so, then the doctor himself should have a considerable quantity of snow on his back and hair, and instead he has none. (01:22:40)
Ten Little Indians (1965)
2 plot holes - chronological order
Directed by: George Pollock
Starring: Leo Genn, Shirley Eaton, Fabian, Hugh O'Brian
Continuity mistake: Lombard trips going up the stairs in the dark; he falls on his right side, but he waves the others to go up lying on the opposite side, facing the opposite way. (01:04:30)
Hugh Lombard: Drop dead.
Det. William Henry Blore: That's not funny.
Trivia: The voice of the mysterious host U.N. Owen is an uncredited Christopher Lee. (00:15:20)