ic ism ▁of ▁detect ive ▁fiction ▁At ▁the ▁nov ella ' s ▁end , ▁D ür ren m att ▁offers ▁to ▁the ▁reader ▁an ▁implicit ▁acknowled gment ▁of ▁the ▁existence ▁of ▁the ▁Es ▁gesch ah ▁am ▁hel licht en ▁Tag ▁version ▁of ▁Matth ä i ' s ▁story , ▁by ▁having ▁Dr . ▁H . ▁explicitly ▁mention ▁that ▁the ▁tale ▁of ▁Matth ä i ▁would ▁make ▁a ▁perfectly ▁suitable ▁entry ▁into ▁the ▁genre ▁of ▁detect ive ▁fiction , ▁if ▁only ▁the ▁ending ▁were ▁changed ▁such ▁that ▁the ▁k iller ▁arrived ▁for ▁his ▁appointment ▁with ▁Ann em arie ▁and ▁fell ▁into ▁Matth ä i ' s ▁trap . ▁However , ▁Dr . ▁H .' s ▁point ▁in ▁rel ating ▁the ▁story ▁is ▁to ▁demonstrate ▁to ▁the ▁first - person ▁narr ator ▁the ▁fol ly ▁of ▁such ▁fiction . ▁The ▁first ▁of ▁Dr . ▁H .' s ▁two ▁main ▁compla ints ▁about ▁typical ▁detect ive ▁fiction ▁is ▁the ▁idea ▁that ▁the ▁criminal ▁is ▁always ▁caught . ▁He ▁regards ▁this ▁as ▁a ▁relatively ▁minor ▁trans gression , ▁however , ▁as ▁even ▁the ▁most ▁na ive ▁of ▁readers ▁would ▁be ▁aware ▁that ▁in ▁real ▁life , ▁sometimes ▁a ▁crime ▁is ▁not ▁solved . ▁But ▁the ▁greater ▁problem , ▁to ▁Dr . ▁H .' s ▁way ▁of ▁thinking , ▁is ▁the ▁manner ▁in ▁which ▁the ▁solving ▁of ▁a ▁crime ▁is ▁dep icted ▁in ▁detect ive ▁fiction . ▁ ▁In ▁such ▁literature , ▁the ▁task ▁of ▁solving ▁a ▁crime ▁is ▁presented ▁in ▁a ▁way ▁that ▁makes ▁it ▁a kin