 On 18 September , 96 , Domitian was assassinated in a palace conspiracy organised by court officials . The Fasti Ostienses , the Ostian Calendar , records that the same day the Senate proclaimed Marcus Cocceius Nerva emperor . Despite his political experience , this was a remarkable choice . Nerva was old and childless , and had spent much of his career out of the public light , prompting both ancient and modern authors to speculate on his involvement in Domitian 's assassination . 
 On 18 September , 96 , Domitian was assassinated in a palace conspiracy organised by court officials . The Fasti Ostienses , the Ostian Calendar , <a href='uninflect' title='1'><mark>records</mark></a> that the same day the Senate<a href='been_done' title='2'><mark></mark></a> proclaimed Marcus Cocceius Nerva emperor . Despite his political experience , this was a remarkable choice . Nerva was old and childless , and <a href='been_done' title='3'><mark>had</mark></a> spent much of his career out of the public light , prompting both ancient and modern authors to speculate on his involvement in Domitian <a href='null_genetive' title='4'><mark>'s</mark></a>assassination . 
On 18 September , 96 , Domitian was assassinated in a palace conspiracy organised by court officials . da Fasti Ostienses , tdaOstian Calendar , record that thdaame day the Senate done proclaimed Marcus Cocceius Nerva emperor . Despite his political experience , this was a remarkable choice . Nerva was old and childless , and done spent much of his career outt of thedablic light , prompting both ancient and modern authors to speculate on his involvement in Domitian  assassination .