i do not understand . none of this make any sense . and exclaim one exasperated character towards the end of death smile at murder . have just sit through this thoroughly confuse mess of a movie and i know exactly how he feel . the story and by the film director aristide massacessi ( good old joe damato use his real name for a change ) and be a clumsy mix of the supernatural and murder or mystery and and pretentious arty rubbish and the like of which will probably appeal to those who admire trippy 70 garbage such a jess franco more bizarre effort and but which have me struggle to remain conscious . open with a hunchback mourn the death of his beautiful sister ( with whom he have be have an incestuous affair and before eventually lose her to a dash doctor ) and death smile at murder soon become very confusing when the very same woman ( play by ewa aulin and who star in the equally strange death lay an egg ) be see alive and kicking and the sole survivor of a coach accident that occur outside the estate of walter and eva von ravensbrück . after be invite to stay and recuperate in their home and where she be tend to by creepy dr. sturges ( klaus kinski in a throwaway role ) and the comely lass begin love affair with both mr. and mrs. ravensbrück ( mean that viewer be treat to some brief but welcome scene of nookie and lesbian lovin ) . so far and so good and i thought to myself at this point and we have have hunchback and incest and some blood and gut and and gratuitous female nudityall ingredient of a great trashy euro horror while what follow and however and be a lame attempt by massacessi to combine giallo style killing and ghostly going on and and even element from edgar allan poe the black cat and to tell a very silly and utterly bewildering and and ultimately extremely boring tale of revenge from beyond the grave . this film seem to have quite few admirer here on imdb and but give the choice and i would much rather watch one of the director sleazy movie from later in his career while i guess incomprehensible and meandering and surreal 70 gothic horror just ain not my thing . 2 . 5 out of 10 ( purely for the cheesy gore and nekkidness ) and round up to 3 for imdb .