Chris was beside himself with fear when he found out his little sister was pregnant with her boyfriend's baby. That is, at first he was. He then grew quite angry when he realized that meant Laura, just fifteen and one year younger, had been having sex before he did.
Laura was well into her second trimester and her petite little frame was obviously showing the baby she carried inside, something she wanted to keep from their parents. Baggy sweaters simply wouldn't do anymore to hide her swelling belly, she now had to avoid Mom and Dad altogether, so she went to her brother for help.
After screaming at one another, and quite loudly too with their parents out, Laura crying and begging, Chris threatening to tell over his anger, he finally agreed to keep her secret, but for a price. And that price was a dear one.