AllMovie

A twenty-five year old man whose chance encounter with a mysterious stranger has found his intellect rapidly expanding finds himself at the center of a gruesome murder case in an award-winning horror thriller starring Olivia Hussey, Sean Young, Dee Wallace Stone, and Udo Kier. Alex Borden is rapidly becoming a genius, but as the power of his mind grows so does the mystery of a brutal series of murders. Now, as the killer seems to set his sights on Alex, the frightened genius must use his newfound brain power to put an end to the mayhem once and for all.