The TARDIS crew visits the earth colony on a faraway planet. At first, the colony appears to be a paradise, but the Doctor (Patrick Troughton) cannot help but notice that there is a rebel movement against the ruling class. He will soon learn the reason for this unrest, but not until this four-part adventure has reached the halfway mark. Written by Ian Stuart Black, the first episode of the four-part "The Macra Terror was first aired on March 11, 1967. Though none of the episodes are known to exist, Doctor Who aficionados have determined that this particular story arc introduced a new opening title sequence to the series. ~ Hal Erickson, Rovi