All MOO...
What a twisted duo they were: DM, the psychopath willing to do anything for his own gain, and MS, the willing partner who secretly hungered for violence. DM was the master manipulator out to build his empire of vehicles, properties, women, and adventures, and Mark -- or as he preferred to be called, "Murk" -- became his secret weapon. DM turned to MS to help him execute the most challenging missions which nobody else could do:
- Killing Laura Babcock because he lost control over her (impregnated her, perhaps?).
- Killing his father to take over his family's wealth.
- Killing Tim Bosma to get his dream truck.
What was in it for MS? The thrill of the kill. He and DM both shared it. It was their dirty secret. But MS really fantasized about. He wrote about it. He rapped about it. He made videos of it. He expressed his excitement for it through symbolism and art that he shared with DM. There was no fun for MS until somebody was hurt. While DM saw killing as a means to an end, MS saw it as the end. He wanted fireworks. It was the sweet fruit to satisfy his poisoned mind.
As DM did with everyone else in his life, he recognized a quality in MS and took advantage of it for his own gain. In exchange for MS's allegiance, DM opened the door for him to make his fantasies a reality, using his wealth to acquire the tools they would need along the way: guns, ammo, incinerator, and more. MS stepped through the door like a child entering Disneyland: DM was indeed Walt Disney, and when the night fell there were plenty of fireworks.