There are two twists that I count in this scenario and I do not care much for either of them. For one, the idea of our otherworldly enemy being allergic to water is a blatant rip-off of H.G. Wells’ common cold-sensitive martians in The War of the Worlds, and, on the other hand, I cannot decide what to make of Graham’s wife’s psychic vision. Is there supposed to be a deeper symbolic meaning to this reveal, did the wife have some secret connection to the aliens, or was it just thrown in there for convenience? Unfortunately, I have to go with that last option, personally, which is heartbreaking since Signs is on fire with some very effective moments of suspense until the final letdown.