I knew nothing about this case before watching The Widower. I found it to be compelling, yet appalling viewing. I found myself rooting actively for the victims, including speaking out loud to the second and third ones. I also found myself having very strong, visceral reactions to Webster which made me realize what a fantastic acting job Reese Shearsmith did. He was PERFECT, nailing the part of a man playing a victim himself, appealing to the empathic, care-taking natures of many women. Yes, he was charming, as Victim #2 says, and he was also smarmy. Even writing this I'm grimacing and feel like throwing something! One of the other reviews here complained that the TV version was not really like reality. Well, there often is a big difference between fiction and non-fiction. And, having read at least one article about what happened (Wikipedia) I realized that much had been left out, including Webster's involvement with several other women, and changed, for the sake of a dramatic thread in the show. I also learned that there is a book that the show was adapted from and I'd guess that anyone who wants true-to-life details should read it, including yours truly.
