Amy, Rory, and River talk at a diner when they discover the fourth envelope was sent to the Doctor, alive and 200 years younger than the one at the lake. The Doctor’s companions tell him about space 1969 and Canton, but refuse to tell him about his death or that the sender is the Doctor himself. The Doctor and his companions travel back to 8 April 1969, where the younger Canton, a former FBI operative, is briefed by President Richard Nixon about a series of phone calls Nixon received from a young girl asking for help. The Doctor arrives in Washington, DC and convinces Nixon to give him a few minutes to locate the girl. Based on the phone call and the girl’s mention of a “spaceman”, he tracks down the Florida intersection the girl where is located. Meanwhile, Amy meets and takes a photograph of one of the leaders of the Silence, a group she also saw by the lake which people forget about any time someone stops looking at them.