The accused is in an interrogation room, and has demanded a lawyer, who has arrived. The lawyer sits at his client's side as the detectives/crime lab/whoever drops a key piece of evidence on the table and accuses them again of the crime. The client immediately begins to confess. Sometimes the lawyer will attempt half-heartedly to stop him ("Don't answer that" or "This interview is over"), but the new evidence causes so much grief and repentance that the victim gives a bone-chilling, Motive Rant which real-life detectives would kill to have. Often the result of an Exasperated Perp.