Second film version [after And Then There Were None] of Agatha Christie’s endurable variation on the old idea of putting a group of disparate characters into a confined situation and letting them be killed one by one shapes up as a good suspenser. The film was made entirely in Ireland although the setting has been changed to what appears to be a solitary schloss in the Austrian Alps.
Director George Pollock, despite a script with complicated credits (screenplay by Peter Yeldham, based on a script by Dudley Nichols, and adapted by Peter Welbeck, based on the Christie novel and play, Ten Little Niggers), works quite a bit of suspense into the restricted action, successfully hiding identity of the tenth Indian without resorting to too many ‘red herrings’.
One major switch, an unfortunate one, has the first victim, originally an eccentric prince, changed to an American rock ‘n’ roll singer (Fabian, in an embarrassingly bad performance).
A one-minute ‘whodunit break’ is inserted near the end when the action is suspended while the audience is encouraged to guess the murderer’s identity.