Sidney Poitier manages to make his part work, portraying a Moorish prince fixated on a legendary golden bell ("The Mother of All Voices"), said to have been crafted by monks in the past. The supporting actors, though, seem out of place; Richard Widmark and Russ Tamblyn don't quite convince as Viking raiders or explorers, and the narrative’s twists and turns, along with the rather wordy conversations, really push beli…