It sounds like the phrase did confuse you. "I can't help but be sceptical..." simply means "I am skeptical..." Try that substitution in your example and it sh

It sounds like the phrase did confuse you. "I can't help but be sceptical..." simply means "I am skeptical..." Try that substitution in your example and it should be more clear: > It’s like finding a notorious serial killer standing over a body holding a knife who says, “a ghost did it.” “I am skeptical about the ghost....”