s . ▁He ▁made ▁his ▁film ▁debut ▁( bil led ▁as ▁Otto ▁W ern ic ke ) ▁in ▁director ▁Fritz ▁Lang ' s ▁classic ▁thr iller ▁M ▁( 1 9 3 1 ) ▁st arring ▁Peter ▁Lor re . ▁Wal dis ▁became ▁a ▁ ▁familiar ▁character ▁actor ▁often ▁appearing ▁in ▁B ▁mov ies ▁and ▁his ▁roles ▁were ▁sometimes ▁un cred ited . ▁He ▁also ▁appeared ▁regularly ▁on ▁television ▁during ▁the ▁ 1 9 5 0 s ▁and ▁' 6 0 s . ▁Wal dis ▁also ▁occasionally ▁acted ▁on ▁stage . ▁Some ▁of ▁his ▁film ▁cred its ▁include : ▁▁ <0x09> ▁The ▁Ex ile ▁( 1 9 4 7 ), ▁Call ▁North side ▁ 7 7 7 ▁( 1 9 4 8 ), ▁Berlin ▁Express ▁( 1 9 4 8 ), ▁The ▁Fight ing ▁O ' F lyn n ▁( 1 9 4 9 ), ▁The ▁Lov able ▁Che at ▁( 1 9 4 9 ), ▁Love ▁Happy ▁( 1 9 4 9 ), ▁Border ▁Inc ident ▁( 1 9 4 9 ), ▁Bag d ad ▁( 1 9 4 9 ), ▁Dark ▁City ▁( 1 9 5 0 ), ▁Bird ▁of ▁Parad ise ▁( 1 9 5 1 ), ▁Night ▁In to ▁Mor ning ▁( 1 9 5 1 ), ▁Sec rets ▁of ▁Monte ▁Carlo ▁( 1 9 5 1 ), ▁The ▁Wh ip ▁Hand ▁( 1 9 5 1 ), ▁Un known ▁World ▁( 1 9 5 1 ), ▁ 5 ▁F ingers ▁( 1 9 5 1 ), ▁An yth ing