TV REVIEWS : SINS OF ‘SIN’

There are a multitude of sins in “Sin of Innocence,” a new TV movie airing at 9 tonight on Channels 2 and 8, but innocence isn’t one of them.

On the contrary, this is the most calculated of TV films, the kind that gives the whole form a bad name--apparently conceived with nothing more in mind than a catchy one-sentence plot for the TV listings: A teen-age stepbrother and stepsister fall in love.

Sounds like hot stuff. But don’t get excited: CBS is simply trying to exploit your voyeuristic instincts. The reality is that there is nothing incestuous about the relationship, the young people having known each other only a few months.

Still, everyone in the film acts upset, although none of them can say why. It’s just wrong, that’s all--probably because CBS wouldn’t dare say it was right. What’s really wrong here, though, is the ridiculous story, the muddled plotting, the therapy-textbook dialogue and the amateurish acting.

Megan Follows and Dermot Mulroney star as the young lovers, with Bill Bixby and Dee Wallace Stone as their newlywed parents and James Naughton as Stone’s ex-husband. The film was written by Jerry McNeely, directed by Arthur Allan Seidelman and produced by Renee Valente.