Jack Bauer is forced to help Tony escape from custody, only to find Tony plans to use Jack to reconstitute the pathogen. Aaron Pierce and Ethan Kanin work together and discover Olivia's role in Hodges' murder. Kim Bauer takes down her captors, and works with Renee Walker to find her father.
Horatio fights to save Yelina and when Delko goes against Calleigh's plea and helps his dangerous father, his life is put in jeopardy.
Gossip Girl decides to liven things up at the Constance Billard and St. Jude’s graduation by sending out a shocking and damaging email blast in the midst of the commencement ceremony, stirring Serena to come up with a plan of attack. The Mean Girls challenge Jenny to throw her hat in the ring to succeed Blair as Queen Bee next year. Lily and Rufus struggle to repair their relationship after Lily’s betrayal. As for the cliffhangers, Blair and Chuck finally… and Serena is shocked by… and Georgina decides to… and Dan, Nate, and Vanessa unknowingly…. Jenny and Eric do something they might end up regretting.
Charlie starts to question his relationship with Chelsea when he hears that Mia is back in town. Meanwhile, Judith goes into labor and Charlie, Alan and Herb rush her to the hospital, on the sixth season finale.
Tree Hill bids goodbye to the past while anticipating the future: Lucas and Peyton prepare for the birth of their child with the help of a surprise visitor, Dan nears his end, and Brooke works with Victoria to relaunch Clothes Over Bro's. Meanwhile, Nathan returns to Tree Hill to face Haley and Jamie after being released from the Chiefs.
Ted is trying to keep his architecture firm afloat by doing an all-nighter, but Marshall tries to lure him to the roof for a surprise 31st birthday party, on the fourth season finale.
Allison turns to Cynthia Keener (who is now in jail) when she starts dreaming of a former kidnap victim who Cynthia had once rescued.
The crew of Hammersley is rocked by the mysterious death of a much-loved shipmate. When valuable "Red Gold" coral is stolen from a dive boat, HMAS Hammersley is drawn into a web of murder, piracy and eco-terrorism. Then, Swain and Spider are kidnapped by an obsessed vigilante, determined to rid Australian waters of illegal fishing boats.
Spencer has an important question to ask Heidi's father when he comes for a visit. Meanwhile, Lauren make the decision to fire Stephanie from People's Revolution.
Gina and Paul clash when it's suggested that she's not personally invested in her patients.
Ignoring Paul's and Oliver's objections, Luke and Bess come up with a plan that will alter their family structure and dynamics.
When April reveals something about one of her closest friends, Paul questions her ability to rely on other people.
In Mia's latest session, they look over some of the biggest issues that life throws at us.
After a doctor is murdered in his home while his wife lies bound and helpless upstairs in their bedroom, it is revealed that the couple's reverend may know more about the crime than he is telling the detectives.
Lynette adapts to Tom's decision to go back to school, Orson takes a beating that Bree cannot comprehend, Gabrielle's niece moves to Wisteria Lane, and Susan and MJ's lives are in grave danger at the hands of Dave.
Gabrielle becomes upset when Carlos offers to have his not-so-innocent niece, Ana, come and stay with them for a while and disrupts their routine. Meanwhile, Lynette becomes angry at Tom as he desperately tries to hold on to his youth. The brutal battle of the sexes between Orson and Bree gets nasty when Orson discovers what she's been up to. Elsewhere, Detectives Lyons and Collins make headway in the arson fire.
As the end of her pregnancy finds Skyler conflicted about her feelings, a dealer's death forces Walt to look for somewhere to unload a load of meth.