In the series 400th episode, a teenaged boy uses a rifle to stop an assault on his mother, but soon learns the target was someone he knows.
Briggs (Nick Offerman) goes undercover in the children’s psych ward; Blake’s ex (Sarah Silverman) resurfaces; and Chief and Glenn share a moment.
Gloria decides to honor her late grandmother by cooking more traditional Colombian meals; Claire finds out Alex is interested in a boy; Mitchell’s aversion to public displays of affection causes…
