**_Dare-devil, she-devil, printer's-devil, evil_** A couple (Barry Bostwick & Kim Darby) and their two kids enjoy a summer at a beach house, but the girl they hired as a nanny (Diane Franklin) is sultrier than expected and, worse, has diabolical intentions. "Summer Girl" (1983) is a television movie cut from the same cloth as “The Babysitter” (1980), both of which influenced future films like “Poison Ivy” (1992). It’s actually better than “The Babysitter” because Diane Franklin is (surprisingly) superior to Stephanie Zimbalist in what is basically the same role, not to mention it’s hard to…