
Radio researcher Nathen picks up signals coming from a spaceship hovering near Earth and succeeds in communicating with his 'opposite number' aboard the ship. Speech and pictures are received showing that the occupants are humanoid – and friendly. But can they trust us?
An Earthman on a solo tour of duty on one of Jupiter's moons buys a Martian woman as a companion. He mistreats her, assuming her to be just a 'dumb Martian'. He learns, to his cost, that she has more intelligence than he gives her credit for.
Psychiatrist John Frame is asked by police to examine Michael Connor, who claims to have come from another time. Frame is startled when Connor demonstrates an extraordinary and intimate knowledge of Frame's private life.