With some snooping.

Once you wake up fully, you take the nearby towel and wipe off your nightly emissions. Then you take the nearby notebook and layout all that happened in your dream last night, the success of your tests and some unanswered questions that popped up while inside Shelly's dreamscape.

1. _Why do the dreams keep appearing with such a sexual twist? _True, you'd added some modifications to the beginning of last night's dream, but more with the intention of humiliating Shelly and getting **** for the invasion of privacy from yesterday. Once the scene was set, you didn't interfere at all, and yet it still ended up with the two of you masturbating together to **** porn. Was it driven by Shelly, or is there some other **** at work?
2. _How connected are the dreams and reality? _You know from previous experience that the dreams are definitely shared. You mother and sister definitely acted oddly after their dreams previously; so how much do they remember and does it affect them in the waking world at all?
3. _Are you the only one? _Your thoughts pull back to the brief sight you had of something moving far in the distance in the hallway. What was it? And the blackness from Penny's dream...was it just a manifestation inside the dream or is it something you should be worried about running into again?

Tapping the pencil against your lip, you decide that there's only one of those questions that you can really do anything about this morning--the second one. Maybe you could spend some time gently probing Shelly and see what you might learn.

You pull on a pair of boxers and head downstairs, pausing when you hear voices coming from the kitchen. It sounds like your sister and mom are already up and talking, and you stop to listen.

"Hey, mom, can I borrow one of your sports bras?" Shelly asks. "I was going to do some yoga this morning and none of mine seem to be fitting well anymore. I got up this morning and they were all too tight. Or maybe we could go out and buy some more?"

Your mother, always tight with money, clucks in disapproval. "I don't know about getting new, but I should have a few that you could borrow. Lord knows I haven't used them in years. I figured you were done growing by now though, you haven't had a change in bra sizes for over a year now."

You can hear Shelly's shrug in the silence that follows. "I did too. But they definitely seem bigger, so I guess not."

Could it be? you wonder. You dash into the downstairs bathroom, just as you hear Shelly leave the kitchen to find your mother's sports bra. Pulling down your boxers, you examine your dick thoroughly. Well, I'll be damned. It does look bigger. It's not the absurd monster you created last night, but you've known and loved your cock for your entire life and you know all its dimensions like the back of your hand--well, palm of your hand, really. It's definitely a little bit longer and a little bit fatter than yesterday.

The only explanation that you can come up with is that somehow the changes you made in the dream have bled over into the real world. Not the entire change, but at least some of it. Your memory turns to when you saw your mom the morning after your shared dream. You'd thought she looked better, younger than she had before. Was that because of her appearance in the dream?

You hear Shelly shuffle past the door, headed to the living room for her yoga. She usually spends a good hour doing it on Saturday mornings, so this might be a good opportunity to do some exploring. You sneak past the kitchen, checking to make sure your mom is still there--your dad is probably out golfing already--and climb the stairs to your sister's room, the door open.

Slipping inside, you look around, finding it just as you visualized it in the dream world, just a bit sloppier. You pause, considering where to start and how to do a search without disturbing any of Shelly's things, and then you see her computer sitting on her desk. You'd watched the porno on your computer in the dream, but Shelly had been the one to set it up...was there a connection?

You move her mouse around and the screen wakes up, password protected. Shit. You take a shot in the dark, using one of the band names from the posters on her wall, but it doesn't work. A password prompt appears at the bottom of the screen and you lean forward to read it.

Secret Lover.

Your mind's blank. Shelly isn't currently dating anybody, hasn't been since she broke up with her last boyfriend over a month ago. You try his name anyway but no go. You type in some of her other past boyfriends; they don't work either. They wouldn't, though, would they? They weren't exactly secret. Maybe...? You type in the names of some of Shelly's best friends. Perhaps she bats for both teams? No luck.

Then on a whim, more of an **** flutter of your fingers, you type in your name. The password screen disappears and you're on her main screen. What the fuck?

The folders here seem mostly innocuous, many related to her school work or to music. You open up a couple but they're exactly as labeled, nothing hidden or buried under a false name. After a few minutes of clicking and searching, you're ready to give up. Maybe there's nothing here. Then you notice the sidebar on the left. Under the tab 'Recent,' there's a folder listed under what looks like a random string of letters and numbers. Bringing the cursor over it, you double click.

Jackpot!

You have found Shelly's archive of porn and it's damn impressive. She has it sorted by platform, movies placed in one section while pictures and games are placed in their own folders. There are even some audio files set aside. You check the size of the parent folder and are shocked to see that her collection is at least twice as big as your own, and organized better too! You never knew that your sister was such a smut junkie.

Delving deeper, you open the movie folder and find that her collection is again broken into smaller groups, this time by genre. You find areas for anal, group sex, lesbian/gay, teen, milf, japanese, busty, bukakke, DP, interracial and a host of others. A little less than halfway down, you find one labeled '****.' Compared to those nearby, it is by far the largest group. You open it.

Movie after movie and clip after clip appear, all focused on family loving. Some have asterisks by them while other don't, and upon closer inspection, you realize that the movies dealing with step-families are missing the asterisk while those with actual blood relationships have them. You slide down, taking in all the **** porn your sister has collected, amazed at the perseverance and time it must have take to gather it all together. After a minute of scrolling, you find it, 'Family Feud.' Opening it up, you confirm that it's the exact same movie that you and Shelly masturbated to last night, scene for scene. You shake your head. This is crazy.

You close everything up and shut down the computer, thinking about the revelations you've found. First, your sister has the hots for you. You'd never have known it based on how she often treats you--annoyed at your every action and embarrassed by your mere presence--but maybe it's all just an act. Given her password and large pile of ****-based porn, it almost certainly is.

And second, the other dreamer definitely can exert some control in your dreams. Left to their own devices, it seems like they'll drive the plot--for lack of a better term--forward based on their own background and feelings. When given the chance, Shelly acted on her own hidden desires and used a movie she has sitting on her computer. You just seem to have gained an override for everything, and can change or control aspects of the dream to fit your own narrative.

Shit? What does that mean about my dream with mom? Is she hot for me too? It seems like a big coincidence for two family members to have hidden incestuous thoughts about the same person. And what about Penny? That dream still has me a little fucked up with how it ended.

Pushing those thoughts aside, you think about Shelly, downstairs doing yoga. She's your most accessible clue to follow. Maybe it's time to have a little talk with her.