Stereotype - Expected for a man to kill.
Usually in a movie it a very typical of a male to loose his family rather than a women, either the male has killed his family or they have died in a tragic accident.
For example in the stepfather- a man who is a psychopathic serial killer as he murders his family, moves around America then gets with a similar family like his . It is very unlikely for a woman to take on a role like this maybe because women are seen are more vulnerable, offence less than men.
Our Main character is similar to the main in the stepfather as they both look and live normal to the outside world but truly they have mental problems and will focus on actions as murderes towards families .
. In both the openings we are shown pictures of their families . The differences is that in the stepfather we see his dead wife and kids and in Missed we see the familys flashbacks of the joy and happiness although he is grieving them.