this horror movie be quite typical for 40 standard . horror movie from the 40 be often movie that be slow in it build up and also most often pick a realistic approach and with it unlikely subject . it also often imply more than it actually show on the screen . isle of the dead be just a movie like that and for the fan of the genre simply a great one to watch . the concept be keep quite simple but it work out effective and when a small group need to remain in quarantine on an island and when a mysterious deadly plague suddenly set in . the movie often imply a lot and the movie spend most of it time build up thing and which in the long run might make this movie a bit unsatisfying for the average viewer ( because not a lot be happen ) but for those who be familiar and like these type of movie it quite reward movie . certainly not the best that the genre have to offer but it simply all good enough . of course the movie be also be uplift by the fact that it have boris karloff in the main lead . once again he proof that he actually be a great actor and who get stick in the horror genre . who know and maybe otherwise he would have be respect more for his talent and have he star also in some acclaimed drama and such . it a movie that rely mostly on it atmosphere and main concept and it do this well . isle of the dead might not be a classic and it certainly be still a fine example of 40 horror . positive .