As Biff Tannen slowly fell, Marty couldn't believe his eyes.

"Doc, Jesus Christ, what the hell did you do to him? I know he's an asshole, but we don't wanna kill him or give him brain damage!"

Bringing the device up so Marty could see it, he explained. "Relax Marty. This is a sleep inducing alpha rhythm generator. I picked it up when I was in the future. All it will do is temporarily put him to sleep, it won't cause any permanent damage, or any at all for that matter."

Marty still wasn't completely sure what his friend had just said, but he trusted him enough to get it. "Well, that's a relief. So what do we do now?"

"What we will do is get him back to 1955 as soon as possible. I'll open the passenger door, and we'll put him in the seat." Between the two men, they picked him up and carried him to the car without too much trouble. However that didn't stop Marty from saying, "My god, Doc, he's heavy. I mean, what does he weigh? This is harder than bench pressing in gym class!"

"Judging from the gravitational pull, I would guess he's about 190 pounds, but it's okay, we're not going to have to carry him far again. When we get to 1955, we'll just get him back in his car."

Marty didn't like the sound of that. He had thought Doc would take him back on his own. After all, he had just returned to a brand new and better 1985. He wanted to rest, and see Jennifer.

"Doc, what do you mean we? I can't fit behind the seat. It's too cramped. And I'm not sitting on Biff's lap either."

"We won't be gone long, it'll be over before you know it. Now I don't want your parents coming out here again, or anyone else for that matter. Let's get going."

Marty got in the seat with an unconscious Biff, with some reluctance. Still he had to admit Doc was right. "Yeah, I don't know how many more stories I can make up about this." With that in mind, Doc peeled off the driveway and out of Lyon Estates. They were heading toward the Courthouse Square.

As they headed up the now suburban, incorporated Route 395, Marty again asked about the sleep inducer. "How long is this thing gonna knock him out for?" With confidence, Doc said, "According to my calculations and everything I've heard, he should be out for an hour or two. It was the best choice, seeing how he was acting. Also, when he wakes up back in 1955, he'll think it was all a dream."

"So it won't matter when he wakes up, right?"

"He might remember some things, but just as dreams become fuzzy after you wake up, surely all he's done here will have this effect too. What matters is that we stopped him from being able to take anything back home with him. By the way, do you have that tape?"

"Right here, in my hand, Doc."

"Perfect! Why don't you just leave it in here for when you want to listen to it? You were going to buy it anyway, right?"

Marty felt a little guilty. "This is heavy duty, Doc. He stole it, and Needles helped him, so typical of that jerk. Those two would get along great if this Biff lived in 1985. In fact, in the original 1985, when Biff was dad's supervisor, they actually did, like 2 peas in a pot."

Doc understood, but offered why, "It's the least we can do. At least you get something out of it for your troubles. You did save my life, after all, and now you're helping me with this as we speak."

At that moment, Marty unwrapped the tape and put it in the DeLorean's high- powered deck. He turned down the volume as the musical thumps of 'The Heart Of Rock & Roll' kicked in however. They both liked the song, but knew they had a mission to accomplish. Just now they had a little background music.

Midway through the song, they passed the Bluebird Motel. "Talk about déjà vu." Marty thought aloud. A couple minutes later, they were in the downtown area, near Lou's Aerobics Center. Doc advised him of what they were about to do. "Luckily there are very few people around now. We're going to go back a few hours after I originally sent you back, and he was in the car. By than, my younger self will be done cleaning up from the experiment, and the town will be deserted. Also, the passing of a few hours will be even more realistic to Biff thinking it was all a dream."

Marty was curious in what exactly happened after he left 1955. "That must've been heavy, huh? Good thing we got away with doing that whole thing. What was going through your mind seeing me disappear into the future?"

"It was brilliant, Marty, I'll never forget it if I tried. We'll have to discuss this later, though there's something I have to warn you about."

"Yeah, what's that?" Marty was a little worried again.

"Every occasion I've traveled through time, I have gone from daylight to a location where it was light. If I left at night, I also arrived at night. It's now 11AM. If we arrive back to drop Biff off in 1955 at 3AM, it will instantaneously go from broad daylight to complete darkness."

"Are you gonna be okay with that?"

"We don't have much of a choice. I don't think either of us wants to just wait a full day for it to get dark. Plus, we can't risk going back to 1955 in the daytime on the 13th, in case someone sees the DeLorean. Just be very aware of the surroundings and be ready to grab the wheel in case I become shocked by the sudden change."

"Won't I get shocked by it too, it I see it going from day to night in a second?"

"Yes, but not to the extent that I will if I'm already focused on driving. Time circuits on. Hill Valley, California for November 13th, 1955, 3AM. Headlights on too! Brace yourself Marty!"

He never thought he would get to experience something like this. It sounded almost as fun as skating on the back of cars. They were about 300 yards from the Essex Theatre as the speedometer read 85, 86, 87. Doc & Marty both eyed the sky widely. Finally, 88, and the three sonic booms erupted. KA- BOOM, BOOM, BOOM!

The bright blue sky instantly vanished and was replaced by the black darkness in the middle of the night. However, because they had just been looking at daylight a second earlier, they didn't instantly adjust to it. Doc shouted "Great Scott!" as he slammed the brakes on. Marty let out a little yell before saying "That was amazing, Doc, but I wouldn't wanna do that every day."

"Precisely." Doc said as he made a U-Turn and headed back toward Western Auto Parts, and Terry's garage, where Biff's '46 Ford was parked. Marty pointed to the right and dead ahead, "There it is Doc! God, how could I not realize he was in the car with me?"

Doc pulled to a stop and said, "Marty, don't worry, that's all in the past. Now, we just have to put him inside and we're on our way." Hoping it would be that easy, Marty commented, "Damn, Doc, I hope the car is unlocked. If we jimmy the door or break in, I'm sure he's gonna notice that when he wakes up, too."

"You're correct. We don't want to risk any more unnecessary changes to the timeline. Try it Marty."

To the relief of both time travelers, the door opened without a problem. Than they both went to pick the unconscious bully up. With ease, they fit him in the driver's seat of his own car, folded his white coat and put it on the seat next to him. They closed the door, and were done with this part of the trip, all set to head back to 1985. Than, as they turned to get in the car, they saw a couple unexpected people.