So, originally the primary focus was for Victoria Winters to find out who her parents are.
But, there's little 'dribs & drabs', which make me wonder:
It's mentioned David is 9 years old. It's mentioned that Laura and Burke used to 'go around together'. It's mentioned that there was an automobile accident, for which Burke received a 5-10 year sentence. It's also mentioned, that when Burke got arrested, Laura left him and immediately got with Roger.
David.....David....maybe merely psychotic, not patricidal psychotic.....
Patti