There are a few moments of humor such as Graham, who finds it difficult to curse, being uncomfortable with hearing a girl confess her frequent cussing. He later tells his children not to associate with the older girl. And, after becoming convinced of possible aliens, Merrill and the children wearing aluminum foil hats to block alien mind reading. Some may chuckle at Morgan’s book saying scientists were persecuted for their belief in alien life. A few scenes are graphically violent, such as Graham chopping invading fingers coming under a door or Merrill beating an intruder with a baseball bat, but violence is mostly suggested. Animal lovers will be disturbed when Morgan has to kill a pet to protect his sister. But only the aftermath, as the sheriff pulls a BBQ fork from the animal, is shown. Graham’s wife is seen in a flashback scene, pinned by a car, but no blood is shown. Graham declares his anger at God and admits his loss of belief that there is a reason for everything. However, Merrill comments about still believing in miracles, and later encourages his older brother’s return to belief. Vulgar language is minimized, but a few obscenities prevent a full endorsement of SIGNS.