Pescaton invasion
From Tardis Wiki, the free Doctor Who reference
In the late 20th century, the Pescatons invaded Earth, attacking and killing many people in London. The Fourth Doctor and Sarah Jane Smith discovered their weakness to high-pitched noise and set a trap for the Pescaton leader, Zor, killing him. When he died, all the other Pescatons followed suit. (AUDIO: Doctor Who and the Pescatons)
