Eventually, Susan was murdered by Crane-- and Alan brought Jason home, asking Monica to raise the boy as theirs. Monica agreed.
That's where the huge AJ/Jason rivalry started...
|back then...no blue eyes!!|
Jason and AJ were in boarding school for awhile and came home grown. AJ was a screw up and Jason on the track to be Alan's protegee in the medical field. Well, until AJ drove drunk into a tree and Jason was forever changed into a mobular hitman with limited feelings. (frontal lobe damage).
I'm sure this will all be explained when Heather gets to town. I believe Heather was with Scott at the time the custody battle was happening.
As for the baby in the film sequence? Jason as a baby- and how did Franco get it? I say because Susan Moore is his mama. BY THE WAY...this would all be WAY more interesting if ALAN WAS ALIVE (Blaming Guza again!!) !!