Stephen Fry asks some taxing questions about things that start with I, with Sandi Toksvig, Al Murray, Dara Ó Briain and Alan Davies.
After the Republic conquers an Umbaran airbase, General Krell orders Rex and his men on towards the heavily fortified capital. Realizing there's a better plan, several clone troopers disobey orders to carry out a rogue, covert operation.
The station is abuzz as Nick and Hank are called to a case where an innocent flash mob results in a gruesome homicide. As Nick delves further into the investigation, he learns more about his unique family history, and finds himself at odds when he and Hank are assigned to protect a dark character from his recent past.
While on a hunt, Sam runs into someone from his past and a confrontation ensues. Meanwhile, Dean reluctantly teams up with a quirky, laid-back hunter named Garth, when he finds himself in a situation that he just cannot explain.
When Michael finds out a patient with a malignant brain tumor committed a horrible crime, he struggles with whether to save the man's life. Meanwhile, a female firefighter who appears to be disoriented is brought to Holt Neuro for evaluation.
As the team is tasked with finding one of the CIAs most wanted, Chuck fears that the Intersect may be going to Morgan's head. Meanwhile Sarah helps Casey navigate his relationship with Gertrude. Elsewhere, Captain Awesome makes a startling revelation about Jeff and Lester.
Sent by the Elephants to the Forest of Magi Oar, Lion-O must learn to master Sight Beyond Sight before returning to the Elephant Village. The Cats encounter a group of paper warriors with a dark secret.
Michael becomes alarmed when he hears Cassandra is in trouble and rushes off to help her. He discovers General Tupelov has accused her of stealing two hundred million dollars and has threatened to kill her unless she returns it. However, when Cassandra's story doesn't add up, Nikita becomes suspicious of what she might be hiding. Meanwhile, Alex receives a very tempting offer from Percy that could give her the resources to eliminate Semak.
Jackie goes undercover as an escort when she and Danny track down a serial killer who is murdering prostitutes in hotel rooms. Meanwhile, Erin meets a potential suitor at an art gallery who shares her interests.
SpongeBob invites Mr. Krabs, Pearl, Sandy, Mrs. Puff, Larry, Squidward, and Plankton to watch a slideshow of his family vacation to the Great Barrier Reef. In the slideshow, SpongeBob and his parents are on a family road trip with Patrick, but the two best friends get lost and end up in a forest for adventure.
Kane finds himself starting to lose control, both politically and personally, as his supporters begin to question their confidence in him. Zajac ventures into uncharted territory while campaigning as Miller continues to dig for answers.
Karl is reunited with Ricky Gervais and Stephen Merchant after returning home and he reflects on his experiences. There are also a few surprises.
Amy and Steve uncover a history of unspeakable violent crimes when a Florida couple claims to see spirits in their home. Steve hunts down evidence of voodoo sacrifices and rampant racism, while Amy is horrified by visions of disfigured dead.
A search and rescue dog travels to Haiti following a devastating earthquake; a border patrol dog makes an alarming discovery.
Superboy's "Sphere" goes through a surprising change, revealing a connection to the forever people of New Genesis.
Hal and Kilowog discover that a group of Red Lanterns, including the conflicted Razer and the vile Zilius Zox have been targeting and eliminating Green Lanterns in Frontier Space. Along with the help from a surviving Frontier Space Green Lantern Shyir Rev , Hal and Kilowog must stop the Red Lantern leader Atrocitus from destroying Shyir's home planet of Colony 12.
Ace test pilot Hal Jordan, who leads a secret life as Earth's guardian Green Lantern, is called back to Oa. Searching for the culprits behind a series of Green Lantern deaths in "Frontier Space", Hal and his gruff fellow Green Lantern Kilowog “commandeer” The Interceptor, a prototype spaceship powered by pure Green Lantern energy and an advanced artificial intelligence system that Hal names Aya
Brettly takes the wheel when he decides to restore a beat-up 1965 Chevrolet truck. Can he keep on trucking with this tricky transformation or will this clunker wind up running on empty. And later, Rick's brother Ron and son Tyler get a sneak peek at a 1940s coin-operated peep show machine for sale.