Gridlock On New Earth in the far future, the Doctor and Martha discover that the population are spending their lives trapped on a motorway. Daleks In Manhattan/Evolution of the Daleks Arriving in New York during the Great Depression, the Doctor and Martha discover that the Daleks are secretly using the new Empire State Building as part of a plan to enslave humanity. The Lazarus Experiment The elderly Professor Lazarus has found a way to rejuvenate himself as a younger man. But the Doctor discovers that the process is flawed, causing Lazarus to transform into a rampaging monster.