actor        character                              title / rank              series                             years
0    david suchet   hercule poirot                                   various              1 - 13                       1989 - 2013
1     hugh fraser  arthur hastings                               captain obe          1 - 8 , 13                1989 - 2002 , 2013
2  philip jackson       james japp  chief inspector / assistant commissioner          1 - 8 , 13                1989 - 2001 , 2013
3   pauline moran   felicity lemon                                 secretary  1 - 3 , 5 - 8 , 13  1989 - 1991 , 1993 - 2001 , 2013
4   zoë wanamaker   ariadne oliver                                    writer             10 - 13                       2006 - 2013

Table as JSON:
{"actor":{"0":"david suchet","1":"hugh fraser","2":"philip jackson","3":"pauline moran","4":"zoë wanamaker"},"character":{"0":"hercule poirot","1":"arthur hastings","2":"james japp","3":"felicity lemon","4":"ariadne oliver"},"title \/ rank":{"0":"various","1":"captain obe","2":"chief inspector \/ assistant commissioner","3":"secretary","4":"writer"},"series":{"0":"1 - 13","1":"1 - 8 , 13","2":"1 - 8 , 13","3":"1 - 3 , 5 - 8 , 13","4":"10 - 13"},"years":{"0":"1989 - 2013","1":"1989 - 2002 , 2013","2":"1989 - 2001 , 2013","3":"1989 - 1991 , 1993 - 2001 , 2013","4":"2006 - 2013"}}