When a retired gay firefighter makes a published claim that several firemen who died in 9/11 were closeted gays, Chief Reilly is determined to set the record straight. While attempting to mask the pain of losing his wife and kids, Tommy does Jimmy a favor and spies on his widow which leads to a surprising discovery. The probie must deal with the unexpected repercussions of being a hero after making his first save in a fire.
Tom and Diana are sent out to investigate a homicide that resembles the MO of a serial killer who was never caught nor heard of for 21 years. The first suspect is Oliver Knox, a member of the 4400. However, Knox has an alibi for the night of the murder and another man confesses to all the crimes. Tom and Diana suspect that Knox is luring people to kill for him and try to lay a trap on him. Meanwhile, people begin to turn hostile toward the 4400, and Jordan Collier decides to organize his fellow returnees. But Richard feels uneasy about Collier’s interest in them.
Rube and Mason go to a kids birthday party to collect their next appointment, but Mason is about to change his mind when he learns that his reap is a little girl. George gets a job from Delores to show a dumb Brennan, who is the nephew of one of The Happy Time owners, how to work. She ends up having a little fun of her own. Meanwhile, Joy and Clancy decide to divorce.
The Atlantis base is threatened when the team discovers that an alien entity is in the city. McKay’s experiment with alien technology goes awry.
The S.G.C. is put under quarantine after a mysterious infection leaves a Russian officer in the infirmary — but the disease may not be a disease at all.
New York City firefighter, Tommy Gavin, cannot escape the ghosts of those who have died around him as he faces the everyday challenge of saving lives while trying to fix his own.
Carl Morrissey is a lowly supermarket employee who happens to be one of the 4400 returned abductees. He uses his new found powers – enhanced reflexes and strength – to become a vigilante and fight crime in his neighborhood. Meanwhile, Lily is thrown in jail for violating the restraining order while looking in on her daughter and ex-husband’s new life. After picking up Lily from the police, Richard and Lily go back to the apartment they now share and we see the romance between the two begin to become more serious. Also, Shawn begins to learn more about his healing powers, and we are left with a cliffhanger ending of whether he will heal his cousin.
A new Stargate team embarks on a dangerous mission to a distant galaxy, where they discover a mythical lost city — and a deadly new enemy.
Sheppard tries to convince Weir to mount a rescue mission to free Colonel Sumner, Teyla, and the others captured by the Wraith.
Everyone on Earth is excited about a comet passing by, but as soon as its trajectory changes to a collision course, everyone starts to panic. The comet turns out to be a giant ball of light that, after exploding, leaves behind 4400 people. They are missing persons who have been gone from a few months to 60 years, and none have aged a day. The 4400 are put in quarantine and eventually released. Some of the returnees begin to exhibit strange and uncontrollable new abilities. Tom Baldwin and Diana Skouris, two Homeland Security agents, are appointed to find out what happened to the 4400.