Madame Kovarian
Madam Kovarian and her militia of soldiers and Silence chaps spearhedded the plot to kidnap infant Melody Pond and brainwash her to grow up and kill The Doctor at Lake Silencio.
River marries a robot and pterodactyls prefer sandwiches in this timey-wimey romp!
The Centurion returns, River Song drops a massive spoiler and bowties are infinitely preferable to monastic neckties.
The Doctor finally learns how to heal people and we get one of the greatest cliffhangers of all time
The Doctor doesn’t know CPR in this pseudo-prequel to The Smugglers