Desc: The Light Within: Directed by Laurence Trimble. With Olga Petrova, Lumsden Hare, Thomas Holding, Clarence Heritage. Dr. Laurel Carlisle marries wealthy Clinton Durand so she will have the money to finance her important experiments in bacteriology in order to find a cure for anthrax--even though she doesn't love Durand and is actually in love with her colleague Dr. Leslie. Durand turns out to be a violent brute who mistreats Laurel and her son Donald. Matters come to a head when Donald dies of pneumonia while on a trip with Durand, and Laurel blames him for it. Complications ensue.