he returned to san antonio and worked for woai-tv as a reporter, then had a brief stretch in dallas at krld radio. in 1973, marrou returned to san antonio and joined the 10 o'clock news team at kens as the anchor, alongside sportscaster dan cook. except for a brief hiatus in 1980 to pursue an opportunity in boston (where he presented the 5:30pm news at wbz-tv, then an nbc affiliate), held that position until his retirement in 2009. kens 5 news dominated the 6:00 pm and 10:00 pm news slots during the marrou era.