In case it was illegal, can he use this recorded conversation against me in a trial, or any legal proceedings? or as an evidence

Hello–
Dismissed from the jail, a criminal guy came to my apartment and without my consent he recorded our face to face conversation on an issue totally unrelated to his case.

I know Missouri is a one-party consent state but isn’t it illegal to record a conversation in someone’s private property or house without permission?

I read this and it seems he must ask for my consent before doing so.
This law only extends to oral communications which are “uttered by a person exhibiting an expectation that such communication is not subject to interception under circumstances justifying such expectation.” See Mo. Rev. Stat. § 542.400(8). Therefore, you may be able to record in-person conversations occurring in a public place where there is no reasonable expectation of privacy without consent.

Traffic Richard Simon’s Answer

You are entering murky waters on the rules of evidence in Missouri. Evidence of several types can be allowed or excluded for several different reasons.