"I Start Counting" is surprisingly solid, considering its obscurity. Adapted from an Audrey Erskine Lindop novel, the film follows a virginal teen (Jenny Agutter) as she fights incestuous feelings for her adult stepbrother George (Bryan Marshall) while simultaneously suspecting him of murdering local girls. Agutter is so young that her beauty hasn't blossomed yet ("Walkabout" is still two years away) but shows ample talent as an actress. A couple of climactic plot developments are easily predicted and the soundtrack's sappy pop songs are a bit of a cringe, but this schoolgirl drama isn't bad at all.