a dr. alan feinstone and corbin bernsen turn a marvelously derange performance in the dentist . with his already obsessive compulsive tendency in high gear and the irs hound him and and a very suspicious act wife while dr. alan feinstone be lose his sanity more and more each day . when the doc indeed do realize that his wife be have an affair with the local pool boy and it set off a string of event that lead to torture and murder and ant total mayhem . the dentist be a solid film . bernsen make the character of dr. feinstone relatable and hateable at the same time . even though he be completely out of his gourd and the audience will still feel sympathy towards him . that my friend . be damn good acting . a nice solid cast of support actor round out this gem of a film . excellent direction and good killing and gore and and effective pacing will keep you entertain throughout the movie run . highly recommended .