nah..that doesn look like your dad!
on a serious note you can get help from a medium.maybe your son is a sensitive.
to handle your childs fear doing something physical will help.
like a ritual or something.
light a diya(oil lamp).(with mustard oil) you can fix it up in a steel bowl or earthen bowl.you can use a thin strip of cotton,rolled up as the wick.
keep the flame going by pouring oil.
(if camphor cubes are available just dip one into the oil)
make him burn an incense stick and take it from room to room.
take a large pan /or a bell and bang it/ring it real loud and long.if you want you can take that too into every room.
you can make loud noises along with it.HOI HOI HOI (ululating is extremely funny too)
well ..i dont know if it wud really DO anything.but you both just might be rolling on the floor with laughter.and the fear will just fly outa you.youll feel refreshed strong and happy.and get VIBING HIGH!!
another lovely thing you can try with your son is make him chant the OM,taking a deep breath and just sitting cross legged(incase the lotus is too complicated)and releasing his breath n saying aaaaaaaaaaaaaaaaaaaauuuuuuuuuuummmmmmm!
do it with him if you do.