ive ▁character ▁Joe ▁De eb s . ▁ ▁It ▁was ▁shot ▁at ▁the ▁Temp el hof ▁Studios ▁in ▁Berlin . ▁The ▁film ' s ▁sets ▁were ▁designed ▁by ▁the ▁art ▁director ▁Kurt ▁Rich ter . ▁ ▁Cast ▁▁ ▁Carl ▁A uen ▁ ▁as ▁Joe ▁De eb s , ▁D ete ktiv ▁▁ ▁Victor ▁J anson ▁as ▁Fer ry ▁Douglas ▁▁ ▁R ia ▁J ende ▁as ▁Ellen ▁▁ ▁Bern hard ▁Go etz ke ▁as ▁Pri ester ▁▁ ▁Martin ▁Hart wig ▁ ▁as ▁F ak ir ▁▁ ▁Adolf ▁Klein ▁as ▁Dire ktor ▁Eric ▁Hans en ▁▁ ▁Albert ▁Pat ry ▁as ▁Ober p ri ester ▁der ▁K ali ▁▁ ▁Emil ▁R ame au ▁as ▁Dr . ▁D uff oir ▁ ▁References ▁ ▁Bibli ography ▁Ken ▁W las chin . ▁Sil ent ▁Myst ery ▁and ▁Det ect ive ▁Mov ies : ▁A ▁Com pre h ensive ▁Film ography . ▁Mc F ar land , ▁ 2 0 0 9 . ▁ ▁Hans - Michael ▁B ock ▁& ▁Michael ▁T ö te berg . ▁Das ▁U fa - B uch . ▁Zwe it aus ende ins , ▁ 1 9 9 2 . ▁ ▁External ▁links ▁ ▁Category : 1 9 1 9 ▁films ▁Category : G erman ▁films ▁Category : Fil ms ▁of ▁the ▁We imar ▁Republic ▁Category : G erman ▁silent ▁feature ▁films ▁Category : Fil ms ▁directed ▁by ▁Lé o ▁L ask o ▁Category : U FA ▁films ▁Category : G erman ▁black - and - white ▁films ▁Category : G erman ▁crime ▁films ▁Category