The former mistress of a one-time "American Idol" contestant accused of murder took the witness stand on Thursday, getting emotional at times as she spent hours reading messages shared between the two in the months leading up to his wife's death. ↧ Ex-mistress gets emotional reading texts during testimony in former... Caleb Flynn, 40, a former pastor who once appeared as a contestant on the fourth season of "American Idol," is on trial for the murder of his wife, Ashley Flynn.