When the sisters try to divert Zankou’s attention from the Nexus, he hatches a plan to absorb all their powers. But when the girls realize what Zankou is up to,…

Grissom and Sara investigate the murder of a woman after a swap party. The married couples in the neighborhood meet and switch partners. With the help of a crime scene…

(Crossover episode with CSI: New York, Season 6 Episode 7 and CSI: Crime Scene Investigation, Season 10 Episode 7.) Horatio Caine calls Las Vegas CSI Dr. Ray Langston to come…

Brenda enters the high-stakes world of pharmaceutical research, when a drug trial for new anti-addiction medication lead to the death of one of the principal investigators. Nothing is quite as…

When four popular high school girls play an evil prank on Reese by pretending he has a secret admirer and then dropping a pig off at his front door, Lois…

Doggett and Reyes investigate a murder outside the house that the original Brady Bunch series was filmed in. The house is owned by a man named Oliver who is obsessed…

“Pass/Fail” is the fifteenth episode of the fourth season of the NBC science fiction drama series Heroes, and the seventy-fourth episode overall. The episode aired on January 18, 2010.

When Hiro travels three years into the past, he has a second chance to save Charlie from the hands of Sylar. However, Samuel’s presence serves to complicate Hiro’s mission even…

As the clock turns back six months for all of the “Heroes,” Mohinder’s father Chandra Suresh arrives in New York to begin his quest to find individuals with extraordinary abilities,…

As Mr. Bennet tries to protect his daughter by any means, Claire’s high school Homecoming celebration turns into a frightening night for many. Nathan and Simone work together to find…

Suresh finally tracks down one of his father’s fabled genetically advanced “supermen.” In Las Vegas, Hiro’s plan backfires when he cautiously turns time to his advantage at the gambling tables….

Confused after losing track of another block of time, Niki finds the police on her doorstep, searching for her fugitive husband D.L. Hawkins. Claire confesses to her father. Hiro and…

As the “Heroes” continue to test their newfound extraordinary abilities, Claire tries to maintain a normal social life when a romance with the football quarterback takes a tragic turn. While…

Outside a bizarre, gruesome crime scene, Los Angeles beat cop Matt Parkman is the only one who can hear the cries of a missing little girl. Claire almost reveals her…

Sam and Dean learn about a monster killing in Chicago and head there to investigate. What they find is a young cop whose girlfriend was killed by the same creature,…