Other forms: retrials
In law, a retrial is a new trial for a case that's already been tried, or that's had its trial halted because of a hung jury or another disqualifying reason.
An attorney can file for a retrial if she believes there's been some kind of misconduct or bias on the part of the jury, or if she discovers that a judge has some conflict of interest. If a defendant is found guilty during a trial, she can continue to request retrials for reasons like newly discovered evidence. In the United States, when someone is tried and found to be innocent, the Fifth Amendment does not allow a retrial.