**_Return of the ‘Sweet 16 Killer’ at a town in Washington_** A 17 years-old teen in the Great Northwest (Kiernan Shipka) is intent on stopping a masked serial killer from 35 years earlier. “Totally Killer” (2023) is a dynamic and amusing slasher mixed with a lot of 80s-isms. If I said more, it’d give away important plot details, which are better left discovered for yourself. Let’s just say it’s a meshing of 80’s slashers like “Sweet Sixteen” and “Halloween IV” with the fun tone of “Peggy Sue Got Married.” A plus is that it effectively adds human interest despite the campiness. Kiern...