Because it allows the defense to come up with an explanation.
Just like they did after they learned about the dog hit. The timeline changed at that point.
DB says she saw an alive BL at 10:30pm.
Dogs hits in house in bedroom.
It makes no sense that a SODDI would take a deceased BL into the bedroom where DB says she was sleeping from 10:30pm on.
So DB says she doesn't remember if she checked on BL at 10:30pm
New timeline is BL alive at 6:40pm :doh:
See how that works? Action, reaction. Statement. . . rebuttal.
If LE doesn't let the defense know what they know, then the defense will have to build their case around some false assumptions.
Take Jersey for example. We can all agree that he is not a boy scout. He has a long rap sheet. Neighbors didn't trust him. He was around that neighborhood for some time. Bad guy.
Once LE took him into custody NOBODY has been able to get to him. Good. The defense can build their whole defense around this creepy guy as the SODDI. He's a defense attorney's wet dream.
Flash forward to a trial.
Prosecution is vague during their opening.
Defense opens with all the stuff pointing at Jersey.
Prosecution counters with a tape of Jersey in an emergency room all night. OR he was incarcerated in the neighboring town's drunk tank.
Defense is screwed.
Prosecution rests. Prosecutor's wet dream.
End of story,