In episode 3.14 ("The Lying Game") Monroe took a leave of absence to return to Montana, to testify for the state against a suspect arrested for the murder of her friends (the leave of absence coincided with Anna Belknap's real-life maternity leave from the show). She was shown in the witness box in episode 3.18 ("Sleight Out of Hand"), struggling to recount the events of the murder, when her co-worker Danny Messer entered the courtroom. Buoyed by his presence, she regained her composure and confidently gave testimony identifying the suspect as the gunman. Thanks in part to Lindsay's testimony, the suspect, Daniel Katums, was found guilty.