Joe Otterson TV ReporterDominique Fishback has signed on to co-star with Samuel L. Jackson in the Apple drama series “The Last Days of Ptolemy Grey,” Variety has learned.In addition, Ramin Bahrani has come onboard to direct and executive produce the limited series, which is based on the novel of the same name by Walter Mosley.Jackson stars as Grey, a 91 year old man forgotten by his family, by his friends, by even himself.