Kristen Ariza

The son of devout Jehovah's Witnesses is accused of killing his teacher after being caught fleeing the scene of her murder; the Democratic National Committee hires the team to investigate a second case.

When Thatcher returns to the hospital with a failed liver, Meredith must save his life; Izzie empathizes with a tumor-riddled patient; annoyed with Cristina's competitive zeal, Mark tricks her into assisting on an unusual surgery.

A night at Mike's piano bar gives Monica a very showy moment in the spotlight. Ross works on trying to move on after he witnesses Rachel and Gavin's kiss. Meanwhile, Chandler employs his secret skill to repair Joey's botched eyebrow-waxing job.

The Lightman Group investigates when the daughter of a federal judge is murdered; a NASA test pilot is accused of crashing a $250 million aircraft on purpose.

Cal becomes obsessed when three young women from India commit suicide the same week. Meanwhile, Gillian and Eli help the SEC try to recover millions of dollars from a man accused of scamming his investors.

Foster and Lightman investigate the disappearance of a girl who might have been murdered; Loker and Torres try to determine whether a peace activist's best-selling memoir is true.