当无情的邮政检查员调查一名同事的谋杀案时，他发现唯一的证人，一名修女，已经成为凶手的目标。AnAlanLaddvehicle,APPOINTMENTWITHDANGERostensiblysoupsupitsnoir-ishtemplatewiththeinvolvementofavirtuousnun,SisterAugustine(aguilelessPhyllisCalvert),whobecomesthesolewitnessofafoulplayandwhoseownlifeisthreatenedhenceforth.But,thatprciscouldbemisleading,whatinfactissetinmotionisarotecops-and-robbersprocedural,leadbythehard-boiledpostalinspectorAlGoddard(Ladd),infiltratinghimselfintoacriminalcliqueconnivingtooperateastick-upofonemilliondollarsintransportationbythePostalService.Yes,thefilmisanexpl