Ali’s quick summary, courtesy of Wikipedia (and vague memories):
Dr. Scott Grainger first came onto the Genoa City scene in 1988 as Christine’s mother’s physician. In true soapy form, Cricket fell in love with him… only to find out he was her brother!
Scott moved onto our lovely Lauren and was involved in a triangle with her and Nurse Sheila Carter. Both Lauren and Sheila became pregnant. Sheila’s baby was stillborn, but she desperately wanted Scott’s child. So, she STOLE Lauren’s baby, and named him Scott Jr., who we were re-introduced to this week. But wait! Lauren didn’t even know about the baby switch because… duh duh duh… Sheila replaced Scott Jr. with a black market baby!!! Eventually, Sheila went even more nuts, held Lauren hostage, and confessed the truth. “Scotty” was returned to Lauren, but she never escaped the torment of the situation.
As for Scott Sr.? Well, he was diagnosed with a terminal illness and died in 1993.