""Doctor Who"", Genesis of the Daleks and Exploration Earth: Genesis of the Daleks AND Exploration Earth

Genesis of the Daleks sees the Doctor sent on a mission to Skaro, where the crippled scientist Davros is engaged in the creation of protective cassings for the ravaged Kaled race. Exploration Earth sees the Tardis travel 4500 years into the earth’s past, and the Doctor and Sarah witness the beginning of the planet.