Electricity!
That was from the days when TV was still black and white and had two channels: “Catweazle”. Catweazle was an English TV children's series that aired for two seasons in the United Kingdom (and other countries): in 1970 and 1971. In the Netherlands, seasons 1 and 2 of the series were broadcast by NOS; for the first time on Sunday, January 4, 1970.
