Mission impossible -- How to be a super scientist -- Whose idea was time travel anyway? -- The time machine -- The evidence : we are all time travelers -- Time zone trickery -- Into the fourth dimension -- Relatively speaking -- Traveling close to light speed -- Black holes -- Wormholes and cosmic string -- Building a time machine -- Alien visitors -- Time travel at CERN -- Puzzles and paradoxes -- Where are all the time tourists? -- Making sense of it all -- Will we ever solve this mystery? -- Amazing universe -- Timeline.