Okay, even more bizzare...are you ready for this
The Unsolved Mysteries episode online...they met at a grocery store and got married in 1981 which had to have been a year or 2 after they met because she was 17 when they met. Well...I wonder what grocery store, because if it was on Holmes Beach, he's known to ride around on a bicycle..then that would be really bizzare.
Lets say, somehow (okay I know this throws my mafia theory out) they crossed paths that fated day. Maybe the victims stopped at the store for beer or soda and one of them said something to Annette or looked at her in some manner or even James and he jumped on his bike and went and killed them. It would make sense that his car was parked at the grocery store although I dont know why he would need the bike.