: After Carlos attempts to escape and fight Darryl, Trudie injects him with a lethal dose of morphine. T.K. and Gabriel burst in just as Carlos loses his pulse; T.K. performs life-saving CPR and administers Narcan to revive him. Owen’s Undercover Mission

: Darryl is a local pharmacist who has been targeting and drugging women with mental illness diagnoses.

In Season 4, Episode 4 of 9-1-1: Lone Star , titled , the story follows two high-stakes parallel plotlines involving a desperate search for a missing officer and an undercover FBI operation gone wrong. The Kidnapping of Carlos Reyes

: He is held by Trudie , an elderly woman who hit him with a shovel to protect her son, Darryl . Carlos discovers a woman's body in their pantry—Donna Burton, the woman Iris was searching for.

: The Honor Dogs suspect an infiltrator. To protect O'Brien, Owen blows his own cover, revealing his wire. The FBI is furious and freezes Owen out of the operation, claiming they have everything under control.