My question involves criminal law for the state of: Louisiana
I live in Louisiana. A few months ago I received a call from my ex's cell phone while he was driving in Louisiana with another adult and our young child.
Our child is just learning to dial a cell phone, so it's not unusual for there to be a prolonged period of silence before he/she realizes that the call has been answered.
Assuming that the call was made by our child, I repeatedly said hello very loudly for about a minute before realizing that my ex had accidentally dialed me and was unaware that I was on the phone. I overheard my ex talking with the adult passenger about ways they could commit a crime against a specific individual without being caught. The conversation was so bizarre and out of character for my ex that I began taping the call to share with my significant other. I did not really believe my ex would actually follow though - I assumed my ex was just venting. After about 30-40 minutes the call was dropped or someone ended the call.
Yesterday I found out that a similar crime was committed against their intended victim a few weeks after the phone call. The crime occurred in a different state (my ex's state of residence) and the case is still open. A suspect (not my ex or his passenger) has been named in the victim's hometown newspaper. I would like to contact the detective and give him the recording, but I'm scared for my child and myself. I don't want to give the police information that leads back to me unless it can be used in court. Is my knowledge of the recording enough to satisfy the one party requirement?
I've made an appointment with a local attorney, but can't see him until Friday. In the meantime I'm worried sick.

