<Tr> <Td_colspan="2"> Criminal Minds character </Td> </Tr> <Tr> <Th> First appearance </Th> <Td> "Extreme Aggressor" 1x01, September 22, 2005 </Td> </Tr> <Tr> <Th> Last appearance </Th> <Td> "In Name and Blood" 3x02, October 3, 2007 (as main cast) "Nelson's Sparrow" 10x13, January 28, 2015 (Flashback) </Td> </Tr> <Tr> <Th> Created by </Th> <Td> Jeff Davis </Td> </Tr>

In what season does gideon leave criminal minds
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