Sam Anderson

When I ask Warren about this moment, he struggles to remember this part of the story. He doesn't deny that it happened, but it's almost as if he's blocked out the details.

When I ask Warren about this moment, he struggles to remember this part of the story. He doesn't deny that it happened, but it's almost as if he's blocked out the details.

Rob and Trent admit they feel guilty about the position they've put Warren in. We kind of felt like villains. But from their perspective, the ends justify the means.

Rob and Trent admit they feel guilty about the position they've put Warren in. We kind of felt like villains. But from their perspective, the ends justify the means.

I haven't seen the video myself, but the investigators described it to me in detail. It's shocking and upsetting. I can understand Warren's reaction. all this sexual stuff is hard to wrap my head around. Is it related to the arsons? Or just some kind of twisted sideshow? For Warren, after all the pressure he's been under, this is the final straw. He agreed to help us.

I haven't seen the video myself, but the investigators described it to me in detail. It's shocking and upsetting. I can understand Warren's reaction. all this sexual stuff is hard to wrap my head around. Is it related to the arsons? Or just some kind of twisted sideshow? For Warren, after all the pressure he's been under, this is the final straw. He agreed to help us.

From that point forward, he worked with us as diligently as he could. It's worth noting that even at this moment, Warren is still wrestling with feelings of loyalty to his friend Mark. He tells the investigators that'll help them to find out whether Mark is truly the arsonist. But he's hoping they'll leave the porn and home videos out of the case.

From that point forward, he worked with us as diligently as he could. It's worth noting that even at this moment, Warren is still wrestling with feelings of loyalty to his friend Mark. He tells the investigators that'll help them to find out whether Mark is truly the arsonist. But he's hoping they'll leave the porn and home videos out of the case.

Over the next couple weeks, Warren meets with Mark several times, often going for walks in the preserve. Mark doesn't know it, but from this point forward, he's secretly being recorded.

Over the next couple weeks, Warren meets with Mark several times, often going for walks in the preserve. Mark doesn't know it, but from this point forward, he's secretly being recorded.

After each hike, Warren delivers the audio back to Rob and Trent. All throughout the spring, it goes on like this. Mark and Warren meet up. Out there in the desert, surrounded by cactus and the rippling orange-brown rocks, Mark and Warren hike. And they talk. And they circle each other. Like the vultures overhead, circling Carrion.

After each hike, Warren delivers the audio back to Rob and Trent. All throughout the spring, it goes on like this. Mark and Warren meet up. Out there in the desert, surrounded by cactus and the rippling orange-brown rocks, Mark and Warren hike. And they talk. And they circle each other. Like the vultures overhead, circling Carrion.

Every time it seems like Mark might be on the verge of telling Warren the truth, their hike comes to an end.

Every time it seems like Mark might be on the verge of telling Warren the truth, their hike comes to an end.

The task force want Mark to feel like he can really trust Warren. They know that Mark is a marketing professional, but he's struggling to find a stable job. So they give Warren some money to hire Mark at the small startup he owns, developing software for nursing homes.

The task force want Mark to feel like he can really trust Warren. They know that Mark is a marketing professional, but he's struggling to find a stable job. So they give Warren some money to hire Mark at the small startup he owns, developing software for nursing homes.

Mark now has a job, or he thinks he does. But for Warren, his full-time job is now hanging out with Mark Sands.

Mark now has a job, or he thinks he does. But for Warren, his full-time job is now hanging out with Mark Sands.

Six weeks go by since Mark's arrest at the fake construction site. By June 2001, Warren realizes that if he's going to get a confession out of Mark, he'll need to shake things up.

Six weeks go by since Mark's arrest at the fake construction site. By June 2001, Warren realizes that if he's going to get a confession out of Mark, he'll need to shake things up.