"Dead Ringer" is an acceptable but not a superior latter day Bette Davis vehicle. As always, she's fascinating to watch, especially at this stage of her career which features her more repellant qualities. Karl Malden, as always, gives a good performance as the suspicious investigator. To my mind, however, the film is worth watching mainly for the two sequences in which the reliably obnoxious Peter Lawford (the Hugh Grant of his day) gets his comeuppance. First, when Malden grabs him by his golf shirt and roughs him up, and then when Lawford's character is deservedly savaged to death by mastiffs. See this one, it's not a great film but it is an entertaining entry of it's kind.
Review of Dead Ringer
