Dogged Debra’s investigative skills have the department on the verge of not only nailing the Trinity Killer, but ultimately exposing Dexter’s clandestine and deadly side job. It would also deprive him of the opportunity to deal with the serial murderer in his own way. At home, Rita’s decision to confide in her husband doesn’t garner the result for which she hoped. And back in the squad room, a breach of ethics has...

When Dee gets a part in the new M. Night Shyamalan film, Mac and Charlie seize a chance to pitch their movie script.

When a Chinese cargo ship runs aground, an investigation reveals it was carrying human freight that served as hosts for a squid-like parasite, but time becomes an issue as the case unfolds with increasingly sinister implications

The kids won’t be all right. Michael must inform a group of children that he can’t fulfill a promise he made to them 10 years earlier. Elsewhere, Jim steps up to maximize office morale by launching an employee-of-the-month plan

Brennan and Booth investigate the death of a competitive gamer whose success and business partnerships earned him plenty of admirers—but also lots of enemies. Meanwhile, Hodgins, Sweets and intern Colin Fisher camp out for movie tickets ahead of its premiere

Britta challenges Jeff to find a date for a night out with Pierce and his new girlfriend. Elsewhere, Annie learns about human anatomy in preparation for her health-fair presentation

Leslie learns that Tom is getting divorced, so she organizes a night out on the town to cheer him up.

An explosion at Dell’s house lands Betsey and Heather in the hospital. everyone is pushed to the limit in trying to save their lives. The tensions between Addison and The Captain rise even more when her mother, Bizzy, shows up and a shocking family secret is revealed.

Addison performs a complex utero surgery, proving not only her talents to her father but giving them some common ground. Sam and Naomi deal with have a family crisis when they discover Maya is growing up way too fast. Violet does the unthinkable.

When production gets under way on Liz’s brand-new talk show, “Dealbreakers,” Jack connives to make the program a hit while tangling with nemesis Devin Banks (Will Arnett). Meanwhile, Tracy tries to prove his love to his wife (Sherri Shepherd) by participating in the ultimate Hollywood challenge

A corpse recovered from the trunk of a car after four months has DNA that matches an ex-convict who died four years ago, and the investigation takes the team into the world of underground gaming. Judd Shaw: James Van Der Beek

During a crisis, Matt receives support from the Taylors and Landry; Vince jeopardizes his football career in order to support his family; and Becky and Riggins become closer

Amanda moves into Syndey’s penthouse and takes an interest in David; David and Lauren’s relationship continues to grow; Ella uses her charm to get Jonah a job; Amanda and Michael reunite.

Lucy learns her first hard lesson in being a doctor.

J.D., Turk, Drs. Cox and Kelso and Intern Denise return to Sacred Heart to teach med school, while new med students Lucy, Drew, Cole and Maya are put through the ringer on their first day of school.

Liam and Dixon plot to tell Naomi the truth about her sister at the horse races; Silver and Teddy bond over their shared loss of a loved one; Adrianna swears off drugs after visiting Navid in the hospital; and Annie sneaks out with Jasper despite being grounded

Glenn questions Nancy’s handling of a heroin user after a deadly batch of the drug makes it to the streets. Meanwhile, Marisa deals with an unusual theft, and Boone makes a move toward changing his future

Cal, Foster and Reynolds go all in to find a missing finalist from the World Series of Poker in Las Vegas, where Cal must determine if the other players are being straight with him about the disappearance. Meanwhile, an analysis of Loker’s latest relationship allows him and Torres to get better acquainted in the process

Thanksgiving dinner becomes uncomfortable for Serena when Lily invites Trip and his wife to attend. Meanwhile, Blair thinks her mom is keeping a secret from her; Rufus discovers Lily has been lying about Cece; and Vanessa has a fight with her mother

Career pressures result in Nathan and Haley making a difficult choice for their family. Meanwhile, Brooke is not pleased when Julian tells Alex a secret; Clay tries to get his career back; and Millicent finds a surprising ally in Victoria