The One With the Painful Misfire (S06E12)

While on patrol with Bella, Tristan receives a call about an incident of vandalism at a rehabilitation center for young offenders. Upon locating the young man responsible, Tristan realizes the situation is much more dire: the youth is holding a shard of broken glass in one hand and a knife in the other, using the glass to harm himself. Despite Tristan's attempts to calm him down, the boy grows increasingly agitated, threatening to continue his self-harm. When he notices the cameraman, he becomes enraged and charges at him.