British thriller from 1967 starring Joan Crawford. After a tightrope walker falls to his death and foul play is suspected, circus owner Monica Rivers (Crawford) seems to think this may be good for business. However, suspicions are aroused about Monica's involvement in the death by her lack of concern. When her troublesome daughter begins work at the circus, matters only worsen as more accidents occur and it becomes clear that there is a killer on the loose. Will they uncover the dangerous culprit before it's too late?