Crossword clues for Perry who's on the case 5 letters:MASONPerry who lost only one case in his careerNIECEThe Case of the Sleepwalker's ___ (Perry Mason mystery)MASONPerry who's on the caseBLACKMAILCase for Perry Mason.FRAMEUPPerry Mason case, perhapsBLACKMAILBasis of a case for Perry Mason.RETAINERWhat Perry Mason seldom undertakes a case without.ONCEHow many times TV's Perry Mason lost a case