Anthony Cook and Nathaniel Cook are American brothers and serial killers who murdered at least nine people in northwestern Ohio between 1973 and 1981, primarily in Toledo. Anthony was arrested and convicted for the final murder, but his and Nathaniel's guilt in the other killings would not be uncovered until he was detained for a misdemeanor in 1998, after which DNA profiling exposed their involvement. Both brothers were later convicted and sentenced to long terms of imprisonment; Anthony received multiple life sentences, while Nathaniel was sentenced to 75 years with a minimum of fifteen years served, and he was paroled after eighteen years in 2018.