Discovery is the formal phase of a lawsuit where each side learns about the other's case before trial. It includes written questions (interrogatories), document requests, depositions, and requests for admission.
In Missouri and Illinois state courts, discovery typically starts after the defendant answers the complaint and continues until a court-ordered cutoff date, usually a few months before trial.
Discovery is where most cases get won or lost. Documents that prove the other side's negligence, contradictions in their witnesses' testimony, and evidence that supports your damages all surface here.