Batman gets the unwelcome aid of the profit-seeking Booster Gold in his efforts to stop Kru'll the Eternal.
The SRU team is deployed to a hospital to end a stand-off between gang members and a man trying to protect his wounded brother.
Jack searches for answers about Abby's secret life, and gets chased through an Anomaly by a deadly Megopteran; forcing the team to go through on a rescue mission into the desolate, predator-filled ruins of the future.
When Dodge tells Joy he doesn't want Darnell to speak at career day, she enlists Earl to pretend to be his father. Things don't go well and Earl realizes Dodge needs to know his real dad. Despite Joy's protests, Earl enlists Randy and Catalina to help him hunt down the deadbeat dad, but what they discover is worse than they could have imagined.
The conclusion of a reunion edition featuring Season 2 reflections.
A reality show where a group of contestants are stranded in a remote location with little more than the clothes on their back. The lone survivor of this contest takes home a million dollars.
In the first part of the two hour season finale, Izzie spends time with a fellow cancer patient and contemplates whether or not to undergo a risky surgery, as Mark is ready to take his relationship with Lexie to the next level and a patient makes Owen reassess his place at Seattle Grace.
In the second part of the two hour season finale, George delivers stunning news to Bailey, sending shockwaves throughout the hospital, and Izzie's friends anxiously await her recovery from surgery. Meanwhile Bailey is surprisingly displeased after being accepted into the pediatric fellowship program, and the victim of a near-fatal traffic accident brings the talents of Seattle Grace's doctors together. This is the second hour of a 2-hour season finale.
Jack's biological father's health hangs in the balance as the pair start to build a relationship. Liz draws some attention as a relationship expert, despite her own many failed relationships, after an appearance on a talk show. Tracy is invited to speak at his old high school and Kenneth helps him overcome some embarrassing memories from those years.
Leslie attends what she believes is a business meeting with an elderly local government bigwig, unaware that her mother has secretly set her up on a blind date. Andy plays his first gig since breaking both of his legs in the pit.
In the season finale, a dead body is found at a club called "The Lab." The team has to do some unexpected and unusual things that have to do with this club. Brennan and Booth may become a couple.
The brothers prepare to fight the forces of the apocalypse in different camps. While Sam and Ruby hunt down Lilith, Dean joins Castiel and Zachariah to take on Lucifer.
Oliver tells Clark he must kill Davis, as Doomsday is a serious threat and must be stopped at all costs. However, Clark struggles with taking a human life, so the Green Arrow and his team decide to take matters into their own hands. Lois takes on Tess, but the fight takes a shocking turn. Meanwhile, Chloe gets caught in the middle of Oliver and Clark’s battle over killing Davis.
At the company picnic, Michael and Holly are reunited for the first time since their split. The rest of the staff competes in games, such as the volleyball tournament.
Langston investigates a homicide which is connected to the discovery of rare valuable chips from a legendary casino from the 1980s.
When transferring Robert Dunbrook's son from prison to court, the NYPD is ambushed by a group of professional kidnappers who kill a member of the team and one of the CSI's lives hangs in the balance.