A judge denied a request to dismiss the Chandra Levy murder trial over letters written to lure a confession out of the accused killer.
Defense attorneys learned of the letters this week and called the move unethical. They asked a judge to dismiss the case by noting Guandique had invoked his right to remain silent.
Prosecutors said there was nothing wrong with the pen pal ruse.
Guandique's trial starts Monday. He faces murder and kidnapping charges in relation to Levy's death.