Deep Rai

On Halloween, the squad members compete to win the title of "Ultimate Detective Slash Genius."

Over the radio, Leanne and Jesse talk a young girl through how to use the supplies onboard a small plane to build a makeshift defibrillator when her mom, the pilot, loses consciousness.

When Lucy receives a strange call on night watch from a man admitting to murder, the NCIS team sets out to find him.

A Syrian is attacked while delivering evidence proving chemical weapons were used on civilians.

Conrad must diagnose a young woman who gets admitted after having extreme night terrors; Devon faces his first Halloween in the emergency room; Nic panics over her decision to bring her newly sober sister to Mina's epic annual Halloween party.

Beverly's meddling in Adam's relationship with Brea leads to a confrontation with her divorced mother; Barry struggles to reunite the JTP following his breakup with Ren.