Miss Martian, Beast Boy, and Superboy team up with Adam Strange to travel to the planet Rann and stop the source of the alien invasion.
Dexter, using what he's learned from Brother Sam, comes a step closer to the Doomsday killers, specifically Travis; Deb and LaGuerta go head-to-head after a call girl ends up dead.
Mac confides in a priest about how he believes his friends are the ones responsible for his weight gain.
The Doctor arrives at Lake Silencio in Utah because he needs to keep the universe safe - by going to his own death.
The Doctor and his companions find themselves on a secret summons that takes them the desert in Utah, right to the Oval Office in 1969. With the help of Canton Everett Delaware III, they must help President Nixon who's taking calls from a little girl afraid of a monster.moreless
Sloane temporarily steps down as Director of his Task Force and gives Jack full authority over the next assignment, which involves Anna Espinosa, Sydney's old foe. However, Anna turns the tables on APO when she captures Nadia and forces Sydney to do her bidding. Sydney tells Nadia about the Rambaldi's prophecy which dictates that two sisters will fight and only one will survive. Meanwhile, Vaughn visits Sark and tries to trick him into helping them to catch Anna. In the end, one of the sisters is mortally wounded by Anna.moreless