The CSIs follow a trail left by Shane Casey and realize that he is targeting Danny, who is vacationing out of town with Lindsay and their daughter, on the sixth season finale of CSI: NY.

The BAU team hunts a serial killer in Los Angeles who preys on his victims in the dark, killing entire families except for one left alive to remember.

Sarah meets with Mr. Cyr (Jason Ritter) to discuss Amber; Crosby must decide if he will stay with his old family or move in with his new one; Zeek tries to win Camille back.

The murder of a magazine editor reveals his predilection for young girls, leaving Nichols and Stevens investigating not only his staff, but a Russian prostitution ring.

When Boyd Crowder and his crusaders become vigilantes, Raylan tries to shut them down.

At Eli Gold’s urging, Alicia must decide if she’ll stand by her man during Peter’s new political campaign, or if she’ll pursue a relationship with Will instead.

Mr. Scnuester encourages the members of glee club to express themselves using Lady Gaga’s music; Rachel has a life-changing encounter; Tina embraces her inner goth.

Gibbs heads to Mexico to face his demons and make a startling decision.

A terrorist threatens students.

Tara and Charmaine discuss Tara’s childhood memories with their mother and Max holds an open house after re-modeling their neighbor’s house.

A serial killer taunts the CSIs by leaving them cryptic hints, and the longer it takes them to decode these puzzles, the higher the death toll rises, on the eighth season finale of CSI: MIAMI.

Jackie fakes an MRI to get a phony prescription; Coop is distraught over the end of the campaign; Eddie returns.

While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon’s perfect match online.

Emotions run high as the harrowing day climaxes with resolute President Taylor closing in on a world-changing peace treaty and a vengeful Jack Bauer taking matters into his own hands for one last and unforgettable job.

The Ring closes in on Chuck and the members of Operation Bartowski; Casey must secretly protect his daughter from the Ring; Big Mike receives news about the Buy More.

After Charlie’s license is suspended, Jake becomes his driver; Alan plans to go to Chelsea’s birthday party.

Bianca quits the cheer squad; Kat runs for class president against Blank.

Adam and Jennifer plan a secret wedding; however, a series of unfortunate events puts their plan in jeopardy. Meanwhile, to keep Russell and Timmy from finding out about the ceremony, Adam tells them he is staging an intervention for Jeff, on the fourth season finale of RULES OF ENGAGEMENT.

The Ring is closing in on Chuck and Operation Bartowski. Fortunately, Chuck’s dad Steven is working hard to save his son. Meanwhile, Casey must secretly protect his daughter from the Ring, and Big Mike receives some serious news about the Buy More.