Published by Sinauer Associates, an imprint of Oxford University Press. In this film, spectacular computer-generated images transport us inside a living cell. We follow a hormone as it passes through the cell membrane and cytoplasm, and enters the nucleus where we see the magnificent ballet of mitosis, the replication of DNA and the separation of chromosomes to form two daughter cells. A lively narrative text and original music accompany the images. The stereoscopic 3D version of this film is already being shown to enthusiastic audiences in science centers across Europe. The remarkable graphics really bring home in detail the large number of molecular processes and gadgets responsible for the behavior of a cell, including DNA replication and cellular division. Astonishing!