When Zod and the Kandorians launch their brutal attack on Earth, Chloe calls in some old friends to join the fight against the aliens. Clark and Zod face off in an epic battle for the control of Earth.
The funeral of a patriarch goes awry when the deceased's mistress arrives to pay her last repects. Kyle is mesmerized by the possibility of learning the blues from a real bluesman.
Stephen asks Karl questions posed to guests on "Inside the Actors Studio, leading to a discussion of organ donation. From Karl's diary: A news report from India about an elephant who had a giant pair of slippers, and Karl's belief that scientists should give up trying to kill germs because it will only make them stronger and bigger.
When an animal rights activist working undercover at a farm goes missing, Allison befriends a pig that could hold the key to the woman's whereabouts. Also, Joe's special birthday gift from Marie leaves him wondering how she was able to obtain it.
Rex and Noah enter the Zoo. A restricted area on the base. Some personal secrets are revealed.
Lt. Tamara Johansen tries to track down what is causing the crew to hallucinate.
A motorcycle accident and a small plane crash provide new patients for the Alpha Team, while they wait to hear news about one of their own.
When the school's superintendant fires Mr. Laritate because of Alex, Mr. Laritate gets a job at a western place. When the school hires a strict new principal, Alex transports Mr. Laritate back to the Old West in an attempt to show him that it's not what he thought it was and make him want to come back to Tribeca Prep.
Ben gets an offer to star in his own video game, but the designer's real motives are part of a plan to destroy Ben.
The trial of The Gravedigger hits close to home for members of the team, and everyone at the Jeffersonian must work overtime to uncover the forensic evidence to elicit a conviction.
Semi-final battles at the Grand Festival. With Nando vs Zoey. Then Dawn vs Jessilina.
The ladies bask in some fun in the sun when Ramona organizes a "renewal getaway." Still stung from her loss, Bethenny is comforted by the ladies---until Kelly kicks up some drama. Meanwhile, LuAnn tunes up in the Big Apple by recording a song in the studio.
The CSI team must investigate one of their own when Langston is accused by a former colleague of being part of the Dr. Jekyll murders, on part one of a two-part season finale of CSI.
Jack becomes even more entangled in his love triangle between Avery Jessup and Nancy Donovan, and he turns for advice to Liz, who is focusing on her own romantic problems. When Liz can't find a date to Floyd's wedding, she revisits her old boyfriends in hope that a spark will reignite. Meanwhile, Tracy continues his journey to earn his egot.
Leslie is disappointed when her new park plans are put on hold by a visit from two state auditors. April has plans for Andy at her birthday party, and Ann tries to piece together a romantic mystery.
Founder's Day has finally arrived, and everyone is busy with last-minute preparations for floats and fireworks. Stefan is uncomfortable with Damon's new attitude toward Elena, but Elena is more concerned about repairing her relationship with Jeremy. Jeremy is worried about Anna, but not sure he's on board with her latest plan for the future. While Caroline is enjoying her day as Queen of the celebration, she also tries to help Matt and Tyler get their friendship back on track. Finally, although Damon and Alaric do their best to stop him, Johnathan Gilbert sets a plan in motion that brings Founder's Day to an end amid chaos, destruction and death.
A series of shocking surprises await the crew when they discover a secret community living on a tropical island. Robert risks his life to save Bomber during a gunfight with drug runners, and Mike investigates claims of an illicit romance between two crew members.