You don't plan on becoming a psychic, it just happens. You wake up one day and nobody has secrets anymore. Where was he really that night he came home late? Why didn't you get the promotion? Who really trusts you? Suddenly all these answers are at your fingertips. Most people use their powers only for these innocent purposes. Wouldn't you? You'd never have to worry about being lied to again.
The thing is, you aren't a psychic. She is. She knows where you were last night, that there was no promotion, that you trust her too much for your own good. She saw everything you saw, watched through your mind's eye as you did things she'd never even considered you capable of. That money you were bringing home wasn't from work. She's listened to you selling crack cocaine on the corner, telling a fresh-faced college student it would make her pain go away. How you were thinking "there's a sucker born every minute" as you wrecked lives.
Remember the power you felt when you yanked that hooker into your truck on the way to pick her up and forced her to strip? When you forced her into the unspeakable? When you slit her throat and shoved her on the side of the road in the middle of nowhere, fighting for what life she had left? She felt that too. She knows what those strange brown stains really are. She was staring at them for a reason.
Who? Your daughter of course! Don't worry, your wife hasn't got a clue. You can keep it that way. How? Well that's simple. You've done it before to that poor hooker. Don't you want to feel the power again? That's it... creep into her room just like that. She's awake. She knows what you're going to do. Hurry! Hands around her neck and squeeze, good boy. I'm proud of you, it takes guts to do that. Ha! Hahahahahahahaha....
There's no such thing as psychics, just twisted little killers with voices in their heads. Run along now, your wife will be waking up any minute. You wouldn't want her to find out, now would you?
