Okay, just as a disclaimer, I have very limited knowledge in chemistry. It was never my thing in school. I don't know how long this mixture would have to sit in order to be 'ready' but we're just gonna accept creative license and have fun with the story, mmkay? XD

Characters aren't mine

Walsh walked back in a few hours later, just like he said he would. The sight he came in on was almost comical.

The younger MacGyver was sweating, thanks to the heat in the room, and he was carefully measuring out the appropriate amount of one of the ingredients.

"How're things goin' in here, Angus?" Walsh boomed as he walked in, causing Mac to jump slightly. The blond gave the large man an exasperated look.

"I've done everything up to the point that you've gotten it to before, but we still have the small problem of the heart attacks."

"Well I'm sure your big brain has some ideas," Walsh said, folding his arms in disappointment and narrowing his eyes at MacGyver. "Or have you forgotten what's going to happen to your father and friend if you can't fix this?"

Mac glared and was about to retort, but suddenly his eyes widened; he knew how to stop the heart attacks! Or at least, he had a pretty good notion of how to.

"Oh, I know that look," Walsh said with a smirk. "What's your idea?"

MacGyver hesitated. He didn't want to tell the man the last ingredient for the serum, but Walsh began fiddling with his gun, and Mac finally relented.

"Phenotrypticol," he stated, as if Walsh and his goons were supposed to understand that.

Walsh stared at the blond in annoyance and confusion. "Is that supposed to mean somethin' to us?"

"Phenotrypticol," Mac repeated. "It's a pharmaceutical drug used to calm patients during psychotic episodes," he explained. He happened to leave out the part where larger doses caused paralysis, but he definitely kept that in mind.

None of the men were moving, and Mac stared at them. "I mean, I can go get it myself if you need me to," he offered, gesturing towards the door. Walsh cocked his gun and aimed it at Mac in one smooth motion.

"Stay where you are," he ordered. "Vic, go get what we need. Tell him what it is again, Angus."

MacGyver hesitated a moment, then repeated the drug name slowly, almost patronizingly. Walsh's man glared at the blond, but Mac didn't look ashamed. After another moment, Walsh rolled his eyes and waved his hand at his man, and Vic reluctantly turned and left the room. Walsh continued to stare at his ex partner's son.

"Well done, Angus," he praised. "I knew you could do it. Y'know, if you were my kid, I woulda brought you with me," he added, sounding like a broken record as he repeated what he'd said when he first caught James and Mac. "You could have been such a great asset. I've got some people who would like to meet you when this is all done."

Mac didn't bother replying; he wasn't planning on sticking around long enough to meet whoever Walsh wanted him to.

It took longer than expected for Vic to get back, almost an hour, and when he did, Mac noticed blood stains on his shirt. The blond got a sinking feeling, hoping that no one had died. Walsh looked expectantly at Vic.

"Well?"

Vic held up the small bottle bottle and shook it, sloshing the liquid contents inside around. "Piece of cake. Had a little resistance from the people keeping it, but they realized it was the best idea to give me what I wanted." Vic tossed the bottle to Walsh, who in turn handed it over to MacGyver.

"There you go, Angus. Do your thing."

Mac took the bottle with a glare at Walsh. He turned back to the table where his batch of KX-7 was sitting. Before he could add in the last ingredient though, there was a loud ruckus from down the hall. Mac turned quickly towards the door, but Walsh was already there, opening it and looking out. One of the men had his gun shoved into Mac's face, forcing the blond to stop moving. Mac stepped back to his table with his hands held up, and the gunman seemed satisfied.

Everyone's attention was on what was going on down the hallway, and MacGyver saw his golden opportunity. He quickly stuck a needle into the lid of the Phenotrypticol and sucked up a good amount before he withdrew it and stuck the syringe into his pocket. He finished just in time, putting his hands back in the air as the man aiming at him briefly glanced back.

Seeing his prisoner still standing there, the man smirked. Walsh turned back around at that moment and looked at Mac expectantly. "Well? Is it done?"

"Do you mean before or after your man threatened to shoot me if I moved?" Mac shot back. Walsh gave the man a short nod, and MacGyver was finally taken out of the rifle sight.

"There you go. Now get to it," Walsh ordered. "No more wasting time."

Slowly, Mac turned around and grabbed another syringe, filling it with the drug as well, then added it to the KX-7 mixture he'd been working on.

When the last of the liquid was out of the syringe, Walsh gestured to his men and two of them grabbed the blond, pulling him away from the table.

"What-"

"Is it ready?" Walsh asked, ignoring the ex-agent's protests. He walked over to the mixture Mac had been working on, staring into it as if that would tell him if it was done or not.

"As far as I know," Mac said grudgingly.

Walsh raised his eyebrows. "Don't forget, Jack's and dear old Daddy's lives depend on this."

Mac glared at his captor but didn't retract his statement that the serum was ready.

"Alright," Walsh said, rubbing his hands together in excitement. "Showtime." He grabbed his own syringe and drew some of the mixture into it, gazing at it greedily. Mac could practically see the dollar signs in the man's eyes, and the blond hated himself that he'd caved in and figured out the rest of the serum. He continued to silently berate himself as Walsh turned and walked out the door, KX-7 in hand. Mac was pushed from behind, and the group made their way back to where Jack and James had been left.

When they entered the room, Mac saw that both Jack and James looked a little more battered than they had when he'd left. Jack was sporting a bloody lip and a black eye, but the blond noticed that several of the guards had similar injuries as well. James had a cut on his cheek, and the fact that one of his father's hands looked a little misshapen was not lost on Mac.

"Had a bit of fun, did we?" Walsh asked, tsking as he saw his prisoners. He looked at James' hand. "Dislocating your thumb? That's an old trick, James. I'm disappointed."

"It worked, didn't it?" James shot back. Walsh raised his eyebrows as he looked around.

"What part of this is 'working' for you?" he asked condescendingly. James didn't answer, and Walsh scoffed as he turned to Jack. "What about you? Didn't try to break free?"

"Oh, I don't need my hands free to do my sorta damage," Jack said, waggling his eyebrows. Walsh chuckled.

"Sound familiar, James?" he asked. "Man, sometimes I really miss the good old days."

"So why did you turn?" James asked angrily. "If you miss the way things were, why'd you ruin everything?"

"Really?" Walsh said, turning with anger in his eyes. "You're asking me? You really don't know?" When James looked at his ex partner expectantly, Walsh scoffed. "You always had to be right. Nothing I could do was good enough. It was always 'do it this way,' or 'it would work better if you'd done it this way,' and I couldn't stand it."

"That's why you turned?" James asked incredulously. Even Jack looked unimpressed.

"I mean, sometimes it can get annoying, sure, but it's coming from a place of caring," Jack added.

Walsh shook his head. "Not the way he did it."

"That's the dumbest reason I've ever heard," Jack said, still not quite sure he believed it.

"Well, we're not talking about me now, are we?" Walsh asked, changing the topic. "It's the fun part of the day."

Walsh turned to Mac. "Well, Angus. Who should we try it on first?"

MacGyver stayed silent, but Walsh had expected that. "Can't choose? That's okay. I guess I'll make the decision," he said patronizingly, rubbing his hands together. "Eenie … meenie … miney … moe."

As if it had been rehearsed, as soon as the last word left his mouth, the guards around Mac grabbed ahold of him and held tight. The blond jerked in confusion, but almost immediately realized what was going on. It appeared Jack and James had caught on as well, and they both began yelling and tugging at their restraints, trying to break free again as Walsh turned to MacGyver, the syringe in his hand.

Nothing James, Jack, or MacGyver did was enough to stop Walsh from sticking the needle into Mac's arm, despite the blond's struggles, and depress the contents right into his bloodstream.

So uh ... Thoughts? XD

Also, for those of you who are curious, I got the word Phenotrypticol from the 90's show, The Pretender. I don't actually know if it's a thing, but I figured why not, right? XD Once again, playing with that creative license ;)

Lemme know what you think!