“Strange Attractors” is the sixth episode of the fourth season of the NBC science fiction drama series Heroes and sixty-fifth episode overall. The episode aired on October 26, 2009.

“Tabula Rasa” is the fifth episode of the fourth season of the NBC science fiction drama series Heroes and sixty-fourth episode overall. The episode aired on October 19, 2009.

The squad identifies the Ice Truck Killer; Rita’s ex-husband, an abusive addict, is paroled.

“The Ice Truck Killer” strikes again and new homicide officer Debra is assigned the case, but she gets reprimanded for violating the chain of command; flashbacks offer insight into Dexter’s…

Garcia plays a crucial role in a case when she travels to Alaska with the BAU team to investigate the murders of several members of a small town.