In late June 1987, Ron MacKenzie, executive vice-president of Quadra Logic Technologies Inc. (QLT) located in Vancouver, was thinking over the firm's latest opportunity to commercialize a product. The small company's research group had come up with a drug which, when combined with laser technology, could be used in the treatment of cancer. Killing malignant tumours with beams of light ... it's right out of science fiction, he muttered to himself. We've got to market this product. But how? Can we do it ourselves or should we sell it to someone else? Maybe we should wait until we're in a better position to support it. A follow-up case, Quadra Logic Technologies Inc. (B) is also available.