Although the novel that was its basis was somewhat inspired by a real political situation, Ada suffers from a severe credibility problem. For those who don't mind how outrageous the plot twists and machinations of their soap operas are, Ada will probably be an okay way to pass a little time. But for those who insist on some degree of believability, the movie will be sunk within the first fifteen minutes. It might not be so bad if Ada's plot twists and turns were buttressed by some incisive characterizations or dialogue that crackled and sparkled. Unfortunately, it's all one-dimensional characters who spout lines we've all heard time and time again. Still, it's easy to see why Susan Hayward was attracted to the project, as the title role is one of those characters that she can give her all to --and she does. It's not great acting, but it's commanding and powerful, and it keeps Ada moving. Surprisingly, Dean Martin turns in one of his stronger performances, making one wish he had committed himself to some better roles in his career. The rest of the cast is fine, even if Wilfrid Hyde-White's accent comes and goes, and director Daniel Mann plays up the strengths of his performers as much as possible.