<Tr> <Th> Audio format </Th> <Td> Monaural </Td> </Tr> <Tr> <Th> Original release </Th> <Td> September 30, 1958--April 8, 1963 </Td> </Tr> <Tr> <Th_colspan="2"> Chronology </Th> </Tr> <Tr> <Th> Related shows </Th> <Td> Law of the Plainsman </Td> </Tr>

What was the real reason the rifleman went off the air