Episode 401 : Sidney Chambers attends a talk by the Reverend Nathaniel Todd, a key part of the Civil Rights movement in America. During the event, protestors disrupt Todd's speech and release fireworks, causing the audience to panic and leading to a crush as dozens of people try to escape through a locked door. In the chaos, a man is stabbed and killed by an unseen assailant. T...。In the not-so-distant future, genetically enhanced dogs are sent across the universe in search of a new home for the human race. It's a giant cosmic game of fetch, as the canines seek a planet that will save humanity and more importantly let them return to their beloved owners.。