Melinda's (Jennifer amor Hewitt) investigation of a poltergeist in the hospital leads to a showdown with sobrenatural forces terrorizing her and her son on tonight's "Ghost Whisperer."

"We have lots of strange children marching around in scary masks, which is so creepy," Jennifer tells ET. "It's like, 'Why do we always have to make children creepy?' I'm constantly asking the producers. I'm like, ''Can't we just have a child who's not creepy, because it freaks me out. It gives me nightmares and I don't like it.'"

There actually is a non-creepy kid on "Ghost Whisperer," and that is her son Aiden...