Sleek
I happen to like this pix a lot;
-many reasons : one of which is the stellar cast; you've got a lot of vets & pros comprised in one film !
-there is a somber & serious tone throughout,suspense builds and though the end is not as satisfying as it could be,nonetheless,we see a resolution of sorts and it is a bit surreal; after all,we are dealing with a different set of circumstances here : one of a shadow world of secrets and the realm of uncertain science which borders on the far reaches of the frontier of the mind that is unsettling to say the least.
The music is odd but it is still one of the foremost composers of his era,Miklos Rosza,an Oscar Winner from the Ben-Hur days of the late 50's which literally saved MGM studios !